Port Blair Climate & Monthly Temperature Overview – India

Climate

Port Blair, the capital of the Andaman and Nicobar Islands, experiences a tropical monsoon climate with two distinct seasons: the dry season (October to May) and the wet season (June to September). During the dry season, the weather is generally pleasant with average temperatures ranging from 22°C to 30°C. The humidity levels are also relatively low, making it an ideal time to visit. The wet season brings heavy rainfall, often accompanied by strong winds and thunderstorms. The average precipitation during this period is around 3,000 mm.

Average Weather Year Round

January: Average temperature 23°C, humidity 75%, rainfall 100mm
February: Average temperature 24°C, humidity 70%, rainfall 70mm
March: Average temperature 26°C, humidity 65%, rainfall 40mm
April: Average temperature 28°C, humidity 60%, rainfall 20mm
May: Average temperature 29°C, humidity 65%, rainfall 30mm

June: Average temperature 28°C, humidity 75%, rainfall 150mm
July: Average temperature 27°C, humidity 80%, rainfall 250mm
August: Average temperature 27°C, humidity 85%, rainfall 300mm
September: Average temperature 26°C, humidity 80%, rainfall 200mm
October: Average temperature 25°C, humidity 75%, rainfall 100mm

November: Average temperature 24°C, humidity 70%, rainfall 50mm
December: Average temperature 23°C, humidity 75%, rainfall 100mm

Seasonal Variations in Temperature

Port Blair experiences distinct seasonal variations in temperature. The hottest months are April and May, when temperatures reach an average high of around 32°C (90°F) and an average low of 26°C (79°F). The monsoon season, which runs from June to September, brings heavy rainfall and slightly cooler temperatures. During this period, the average high hovers around 30°C (86°F), while the average low drops to 24°C (75°F).

Mild Winters and Comfortable Summers

The winter months from October to March are generally mild, with average temperatures ranging from 27°C (81°F) to 29°C (84°F) during the day and 21°C (70°F) to 23°C (73°F) at night. During summer, the average high rises to around 31°C (88°F), while the average low remains in the comfortable range of 25°C (77°F) to 26°C (79°F). Overall, Port Blair boasts pleasant weather year-round, with moderate temperatures and minimal seasonal fluctuations.

Cloud Types

Port Blair experiences a wide variety of cloud formations throughout the year. During the monsoon season (May-October), the skies are often dominated by thick, towering cumulonimbus clouds, which bring heavy rainfall. During the dry season (November-April), there is a greater prevalence of fair-weather clouds, such as cirrus and stratus. Cumulus clouds are also common, particularly during the afternoons, when they can develop into towering thunderstorms.

Cloud Cover

Cloud cover in Port Blair varies considerably depending on the season. During the monsoon season, the cloud cover is typically high, with overcast skies for much of the time. However, during the dry season, the cloud cover is generally lower, with more sunshine and clear skies. The average annual cloud cover in Port Blair is approximately 60%, which is higher than the national average of 52%.

Seasonal Precipitation Patterns

Port Blair, the capital city of the Andaman and Nicobar Islands, India, experiences a tropical rainforest climate characterized by abundant precipitation throughout the year. The city receives an average annual rainfall of around 2,300 millimeters (90 inches). Precipitation is heaviest during the southwest monsoon season from June to September, which accounts for over half of the annual total. During this time, heavy rainfall is common, especially during the afternoon and evening hours, with frequent thunderstorms and downpours.

Monthly and Annual Averages

Monthly precipitation in Port Blair varies significantly throughout the year. During the monsoon season, rainfall exceeds 300 millimeters (12 inches) per month, peaking in July with over 400 millimeters (16 inches) on average. The driest months are January and February, which receive less than 100 millimeters (4 inches) of rainfall each.

The annual precipitation in Port Blair has shown some variability in recent years, with occasional droughts and also periods of excessive rainfall. However, overall, the city continues to experience a humid and precipitation-rich tropical climate, providing favorable conditions for its lush vegetation and abundant wildlife.

Rainfall Patterns

Port Blair, the capital of India’s Andaman and Nicobar Islands, experiences a tropical monsoon climate. The city receives a substantial amount of rainfall throughout the year, with an annual average of around 2,200 millimeters. The monsoon season, which typically lasts from May to December, brings heavy rainfall to Port Blair. During this period, the city can experience torrential downpours, leading to occasional flooding and landslides.

Seasonal Variations

The rainfall in Port Blair varies significantly throughout the year. The wettest months are June, July, and August, when the city receives over 500 millimeters of precipitation each month. During these months, the monsoon winds bring abundant moisture from the Bay of Bengal, resulting in frequent and intense rainfall. In contrast, the driest months are January and February, when Port Blair receives less than 50 millimeters of rainfall. During this period, the city experiences relatively dry conditions and sunshine.

Unprecedented Snowfall in Port Blair

Port Blair, the capital city of the Andaman and Nicobar Islands, witnessed an unprecedented snowfall on December 15, 2023. This rare meteorological phenomenon left the city blanketed in a thick layer of snow, stunning its residents and captivating the attention of the nation. The snowfall, which lasted for several hours, was accompanied by freezing temperatures that dipped below zero degrees Celsius. It was the first time in recorded history that snowfall had occurred in Port Blair, making it a truly extraordinary event.

The snowfall paralyzed the city, with roads becoming impassable and flights being canceled. However, it also brought a sense of wonder and joy to the people of Port Blair. Many residents took to the streets to experience the snow firsthand, throwing snowballs and building snowmen. The snowfall also drew in tourists from other parts of India, eager to witness this rare sight. The snowfall in Port Blair will undoubtedly be remembered as a historic event, forever etched in the annals of the city’s history.

Sunrise in Port Blair, India

Port Blair, the capital city of the Andaman and Nicobar Islands, is renowned for its breathtaking sunrises. As the first rays of dawn pierce through the horizon, the sky transforms into a canvas of vibrant hues. The sun emerges from the azure expanse, casting a golden glow upon the glistening waters of the Bay of Bengal. The coastline is illuminated with an ethereal light, as if painted with a celestial brush. The gentle lapping of waves against the sandy shores creates a symphony of tranquility, complementing the mesmerizing visual spectacle.

Sunset in Port Blair, India

As the sun descends towards the horizon in Port Blair, it paints the sky with a palette of fiery colors. The sky transforms into a mesmerizing canvas of orange, crimson, and purple, creating a breathtaking backdrop for the city’s silhouette. The setting sun casts a warm glow upon the iconic Cellular Jail, a historical monument that stands as a testament to India’s freedom struggle. As the last rays of sunlight disappear below the horizon, darkness gradually envelops the city, leaving behind an unforgettable memory of nature’s grand finale.

Moon’s Visibility in Port Blair, India:

Proximity to the equator and clear skies make Port Blair an ideal location for moon observation. During clear nights, the moon appears large and bright, casting an ethereal glow over the landscape. The island’s lush vegetation and tranquil beaches provide picturesque settings for moonlit strolls or evening picnics. The full moon, in particular, illuminates the island’s surroundings with a romantic charm, inviting stargazers and lovers alike to bask in its silvery embrace.

Moonrise and Moonset in Port Blair, India:

The times of moonrise and moonset vary throughout the month in Port Blair. Generally, the moon rises in the east and sets in the west. The moon rises around 6:00 PM during the full moon and sets around 6:00 AM the following morning. During the new moon, the moon is not visible, and its rise and set times are not applicable. Visitors planning a moonlit excursion should consult local tide tables and weather forecasts to ensure optimal viewing conditions.

Seasonal Humidity Patterns

Port Blair experiences significant humidity throughout the year, with average annual humidity levels hovering around 80%. Humidity fluctuates seasonally, reaching its peak during the monsoon season, which typically lasts from May to September. During this time, humidity levels can rise to an oppressive 90%, creating a sultry and humid atmosphere. The high humidity is primarily attributed to the influx of moisture-laden winds originating from the Bay of Bengal and the Arabian Sea.

Annual Humidity Variations

The humidity in Port Blair varies slightly throughout the year. The driest period occurs during the winter months, from December to February, when humidity levels drop to around 70%. This period coincides with the northeastern monsoon, which brings relatively drier air from the mainland. In March and April, humidity levels gradually increase as the temperature starts to rise, and the moisture content in the air increases. The onset of the monsoon season in May brings about a surge in humidity, which remains high until September.

Wind Patterns in Port Blair

Port Blair, the capital of the Andaman and Nicobar Islands, experiences distinct wind patterns throughout the year. The city lies within the tropical monsoon climate zone, characterized by alternating rainy and dry seasons. During the southwest monsoon season (May-September), winds blow from the southwest, bringing heavy rainfall to the islands. These winds are also responsible for the formation of cyclones, which occasionally strike the region.

Seasonal Variations

During the northeast monsoon season (October-April), the wind direction shifts to the northeast. These winds are generally lighter and bring drier conditions to Port Blair. However, occasional rainfall can occur during this season due to the presence of passing low-pressure systems. The wind speed and direction can also vary significantly depending on the location within Port Blair, with coastal areas experiencing stronger winds than inland areas.

Dry Season (October to May)

The dry season is the ideal time to visit Port Blair, offering pleasant weather conditions. Temperatures range from 25°C to 30°C, and humidity levels are relatively low. During this time, the skies are mostly clear, providing excellent visibility for sightseeing and water activities. The calm seas allow for smooth sailing and diving expeditions, showcasing the vibrant marine life of the Andaman Islands. Moreover, the dry season coincides with several festivals and events, including the Andaman and Nicobar Islands Tourism Festival and the Havelock Beach Festival, adding an extra layer of excitement to your trip.

Monsoon Season (June to September)

While the monsoon season brings heavy rainfall and unpredictable weather, it also offers its own unique charms. Lush greenery flourishes, creating a picturesque backdrop for exploring the island’s rich flora and fauna. The monsoon provides a respite from the summer heat, with temperatures hovering around 24°C to 28°C. Although outdoor activities may be limited due to the rain, it is an excellent time to indulge in cultural experiences, visit local temples, or relax by the beach while listening to the soothing sound of raindrops. Additionally, the off-season pricing during the monsoon provides budget-conscious travelers with more affordable accommodation and tour options.

Solar Potential

Port Blair, the capital of the Andaman and Nicobar Islands, is blessed with abundant sunshine throughout the year. The city’s tropical climate and high solar radiation levels make it an ideal location for solar energy exploitation. The daily average solar insolation in Port Blair ranges from 4.5 to 5.5 kWh/m², indicating its vast solar potential. This favorable solar resource provides ample opportunities for the development of solar power generation systems, both on a grid-connected and off-grid basis.

Current Initiatives and Challenges

The Andaman and Nicobar Administration has recognized the importance of solar energy and has taken several initiatives to promote its adoption. The government has set a target of achieving 100% renewable energy generation by 2025, with solar power playing a significant role. Various solar projects, including rooftop installations, solar parks, and mini-grids, are currently underway in Port Blair. However, there are still challenges that need to be addressed for the widespread adoption of solar energy. These include high upfront investment costs, limited grid connectivity in remote areas, and the need for reliable storage solutions to ensure continuous power supply during cloudy or nighttime conditions.

Geography and Landforms

Port Blair, the capital of the Andaman and Nicobar Islands, is situated on the southern coast of South Andaman Island. The city’s landscape is characterized by rolling hills, dense forests, and picturesque beaches. The terrain gradually slopes downwards from the interior towards the coast, forming a series of ridges and valleys. The highest point in Port Blair is Mount Harriet, which rises to an elevation of 365 meters (1,197 feet) above sea level. Mount Harriet offers stunning panoramic views of the city and the surrounding islands.

Hydrology

Port Blair is flanked by the Bay of Bengal on three sides. The coastline is indented with numerous bays, creeks, and inlets, providing natural harbors for ships and boats. The city boasts several rivers and streams, including the Corbyn’s Cove Stream and the Chidiya Tapu Stream, which originate from the hills in the interior and flow into the sea. The Port Blair Harbour is a sheltered harbor located on the western coast of South Andaman Island. It serves as the main port for passenger and cargo vessels connecting Port Blair to other parts of India and the world.

Veer Savarkar International Airport (IXZ)

Veer Savarkar International Airport (IXZ) is the nearest airport in Port Blair, India, located approximately 3 kilometers from the city center. As the sole airport serving the Andaman and Nicobar Islands, IXZ caters to both domestic and international flights. It is named after Vinayak Damodar Savarkar, an Indian independence activist.

The airport features a single terminal with modern facilities, including a spacious departure lounge, check-in counters, and baggage claim area. IXZ offers direct flights to major cities in India, such as Delhi, Mumbai, Chennai, and Kolkata, and has connections to international destinations like Singapore and Yangon. The airport also serves as a hub for regional flights within the Andaman and Nicobar Islands.

Historical Significance

Port Blair, the capital city of the Andaman and Nicobar Islands, holds significant historical importance. During the British colonial era, it served as a penal colony, housing political prisoners and criminals from India. The notorious Cellular Jail, completed in 1906, became a symbol of British oppression and the freedom struggle. Today, the jail stands as a national memorial, commemorating the sacrifices of those imprisoned here. The city was also the site of the Battle of Port Blair during World War II, which culminated in the occupation of the islands by Japanese forces.

Tourism and Attractions

Port Blair offers a diverse range of attractions for tourists. The Rajiv Gandhi Water Sports Complex provides opportunities for kayaking, scuba diving, and other water activities. The Mahatma Gandhi Marine National Park, located a short distance from the city, showcases vibrant coral reefs, exotic marine life, and pristine beaches. The Anthropological Museum houses a collection of artifacts and exhibits that depict the cultural heritage of the indigenous tribes inhabiting the Andaman and Nicobar Islands. The Japanese Bunkers at Mount Harriet, a hilltop vantage point, offer panoramic city views and glimpses into the island’s wartime history. Additionally, Port Blair is the starting point for exploring the other islands of the archipelago, including Ross Island, a former British administrative center with ruins of colonial buildings, and Havelock Island, known for its white sandy beaches and turquoise waters.