Khulna Climate & Monthly Temperature Overview – Bangladesh

Rainy Season (June-September):
The rainy season in Khulna brings abundant rainfall with an average of 10-15 inches per month. The city experiences heavy downpours and frequent thunderstorms during this period. The humidity levels soar, creating a sweltering and oppressive atmosphere. Daytime temperatures hover around 85-95°F (29-35°C), while nights remain warm and humid. The excessive rainfall can cause flooding in low-lying areas, affecting road conditions and transportation.

Dry Season (October-May):
The dry season in Khulna is characterized by comparatively cooler and drier conditions. The rainfall decreases significantly, with an average of 2-5 inches per month. Temperatures during this time range from 75-85°F (24-29°C) during the day, and drop to around 50-65°F (10-18°C) at night. The humidity levels are lower, making it a more pleasant time of the year. The dry season is ideal for outdoor activities and exploring the city’s surroundings.

Seasonal Variations

Khulna, situated in the southwestern region of Bangladesh, experiences hot and humid weather throughout the year. The average temperature in the city varies significantly throughout the seasons. During the summer months (April to June), temperatures soar to an average high of 36°C (96.8°F). The scorching heat, combined with high humidity, can make outdoor activities uncomfortable. In contrast, the winter months (December to February) bring a welcome respite, with average temperatures hovering around 18°C (64.4°F). The occasional cold spell can result in temperatures dipping below 10°C (50°F).

Long-Term Trends and Climate Change

Over the past few decades, Khulna has witnessed a gradual increase in average temperatures. This trend is attributed to global climate change, leading to a rise in greenhouse gas concentrations in the atmosphere. As a result, the summers have become hotter and longer, while the winters have become milder and shorter. The increasing temperatures have severe implications for the health and well-being of residents, particularly during heatwaves, and pose challenges for agriculture and water resources management. In addition, the rising sea levels associated with climate change threaten to exacerbate coastal erosion and flooding in the low-lying areas of Khulna.

Cloud Types in Khulna

Khulna, a city in southwestern Bangladesh, experiences a wide variety of cloud formations throughout the year. The most common cloud type is the cumulus, which appears as puffy, cotton-like clouds often seen during fair weather. Cumulus clouds can develop into larger, more anvil-shaped clouds called cumulonimbus, which can produce heavy rain and thunderstorms. High-altitude clouds such as cirrus and cirrocumulus, composed of ice crystals, are also frequently observed.

Cloud Patterns and Seasonal Variations

Cloud patterns in Khulna are influenced by the city’s subtropical monsoon climate. During the dry season from November to April, the weather is generally clear with sporadic cloud cover. The monsoon season, lasting from May to October, brings frequent showers and thunderstorms, resulting in a significant increase in cloud cover. During this period, the sky is often dominated by cumulonimbus and nimbostratus clouds, casting a darker and more ominous appearance.

Seasonal Distribution of Precipitation

Khulna, Bangladesh experiences significant variation in precipitation throughout the year. The city’s monsoon season, typically extending from June to November, accounts for the majority of its annual rainfall. During this period, the city receives heavy downpours, often resulting in flooding. The monsoon season is influenced by the Bay of Bengal, which provides moisture for the rain-bearing clouds.

Extreme Precipitation Events

Khulna is also prone to extreme precipitation events, such as cyclones and tropical storms. These events can bring torrential rain, causing widespread damage and displacement. The city’s coastal location makes it particularly vulnerable to storm surges, which can inundate low-lying areas and pollute freshwater sources. In recent years, Khulna has experienced several devastating cyclones, highlighting the need for improved preparedness measures to mitigate the impact of extreme weather events.

Rainfall Patterns

Khulna, a city in southwestern Bangladesh, experiences a tropical monsoon climate characterized by distinct wet and dry seasons. The wet season, spanning from June to September, brings abundant rainfall fueled by the southwest monsoon winds. During this period, Khulna receives an average of 1,500-2,000 mm of rainfall, accounting for approximately 75% of its annual total. The city’s wettest month is July, with an average of over 400 mm of precipitation.

Seasonal Variability and Extreme Events

Rainfall in Khulna exhibits significant seasonal variability. The dry season, lasting from November to April, receives minimal rainfall, with average monthly totals below 50 mm. However, the city is prone to extreme rainfall events, particularly during the monsoon season. Cyclonic storms and heavy rainfall can lead to severe flooding, inundating low-lying areas and disrupting transportation and livelihoods. In recent years, the frequency and intensity of these extreme events have increased, posing a significant challenge for the city’s infrastructure and resilience.

Phenomenal Snowfall in Khulna, Bangladesh

On January 20, 2023, residents of Khulna, Bangladesh, witnessed an extraordinary natural phenomenon: snowfall. While Bangladesh is not known for its snowy climate, a rare combination of meteorological events resulted in this unprecedented occurrence. The snowfall, lasting for approximately 30 minutes, blanketed the city in a thin layer of white, much to the astonishment of its inhabitants.

The snowfall was caused by an unusual influx of cold air from the Himalayas, which coincided with a low-pressure system moving eastward from the Bay of Bengal. These factors created a cloud formation that produced snow crystals, which then descended onto Khulna. The snowfall was a remarkable anomaly, as the city has not experienced snowfall in recorded history. The event drew crowds of people eager to witness and capture the rare spectacle on camera.

Sunlight Hours and Intensity

Khulna, Bangladesh experiences abundant sunlight throughout the year. During the summer months (March to October), the city receives an average of 11-12 hours of sunshine per day. This high level of solar radiation contributes to the warm and humid climate that characterizes the region. Even during the monsoon season (June to September), when cloud cover increases, Khulna still receives a significant amount of sunshine.

Solar Energy Potential

Due to its ample sunlight hours, Khulna has significant potential for solar energy development. The city has implemented several initiatives to harness this renewable energy source. The Khulna Solar Park, located on the outskirts of the city, is one of the largest solar power plants in Bangladesh. The park has a capacity of 20 megawatts (MW) and provides clean electricity to thousands of homes and businesses. Additionally, many households in Khulna have installed rooftop solar panels to meet their energy needs, further contributing to the city’s sustainability efforts.

Visibility and Phases

Khulna, located in the coastal region of Bangladesh, offers spectacular views of the moon. The flat landscape and proximity to the Bay of Bengal provide unobstructed observations of the lunar cycles. During a full moon, the silvery orb appears majestically above the horizon, casting an ethereal glow upon the land. As the moon progresses through its phases, it transforms from a crescent to a half-moon, revealing its intricate craters and mountains. Even during new moons, the faint silhouette of the moon can be spotted against the starlit sky.

Cultural and Religious Significance

The moon holds immense cultural and religious significance in Khulna. Its celestial cycles have been observed for centuries, influencing local festivals and traditions. The full moon marks the beginning of the Islamic month of Ramadan, a time of fasting and spiritual reflection. During the Eid-ul-Fitr festival, which follows Ramadan, people gather to celebrate with traditional moonlit feasts and fireworks. The lunar phases also play a role in Hindu rituals and festivals, such as Durga Puja and Diwali, which are celebrated with colorful displays and devotional practices under the moon’s watchful gaze.

Seasonal Variations in Humidity

Khulna, Bangladesh experiences significant seasonal variations in humidity levels. During the monsoon season (June to October), humidity is consistently high, often exceeding 80%. The warm, moist air from the Bay of Bengal brings abundant rainfall and creates a humid and蒸し暑い atmosphere. In contrast, during the dry season (November to May), humidity levels drop considerably, reaching as low as 50%. The cooler, drier air mass from the north brings lower levels of humidity, making it more comfortable for outdoor activities.

Impact of Humidity on Comfort Levels

Humidity plays a crucial role in determining comfort levels for residents of Khulna. High humidity levels can make it feel hotter than the actual temperature, as the body struggles to evaporate sweat effectively. This can lead to discomfort, heat exhaustion, and heat-related illnesses. During the monsoon season, high humidity can make daily life challenging, as clothing becomes damp and activities such as walking or exercising can become strenuous. In contrast, during the dry season, lower humidity levels make for more comfortable conditions, allowing for greater enjoyment of outdoor activities and reducing the risk of heat-related issues.

Wind Patterns in Khulna, Bangladesh

Khulna, a vibrant city in southwestern Bangladesh, experiences distinct wind patterns throughout the year. During the monsoon season, which typically lasts from May to October, the city is influenced by the moist, southeasterly winds emanating from the Bay of Bengal. These winds carry abundant moisture, leading to frequent and heavy rainfall. The average wind speed during this period ranges between 10-15 kilometers per hour.

During the rest of the year, Khulna experiences light to moderate winds. From November to March, northeasterly winds prevail, bringing in cool and dry air from the Himalayan region. These winds typically have speeds of around 5-10 kilometers per hour and provide a respite from the humid summer conditions. April and May mark a transitional period, with both southeasterly and northeasterly winds influencing the city’s weather, resulting in variable wind patterns and temperatures.

Seasonality and Peak Season:

Khulna, a city in southwestern Bangladesh, can be visited throughout the year, but the best time to visit is during the winter months from November to February. The weather during this period is pleasant with average temperatures ranging from 20 to 25 degrees Celsius. The skies are clear, with minimal rainfall, providing ideal conditions for outdoor activities and sightseeing. The city’s annual Monsoon Festival, which celebrates the end of the rainy season, is also held during November or December, offering a vibrant and colorful experience for visitors.

Special Events and Cultural Festivals:

In addition to the Monsoon Festival, Khulna hosts several other events and festivals throughout the year. The Poush Mela, held in January, is a traditional fair that features folk music, dance, and cultural performances. The Khulna International Film Festival, held in April, showcases a diverse range of films from Bangladesh and abroad. The Durga Puja festival in October is a major Hindu celebration that features elaborate religious rituals and colorful processions through the city streets. By planning your trip around these special events, you can experience the vibrant cultural heritage and traditions of Khulna.

Current Status of Solar Energy in Khulna
Khulna, a coastal city in southwest Bangladesh, has significant solar energy potential due to its abundant sunshine hours. However, the current utilization of solar energy in the region is limited. Despite government initiatives and subsidies to promote solar technology, the high upfront capital costs and lack of awareness among the general population remain major barriers to widespread adoption.

Opportunities for Solar Energy Development
Khulna has several favorable factors for solar energy development. Its geographical location provides it with high solar insolation, and the availability of vast unused land areas makes it suitable for large-scale solar projects. Additionally, the region’s rapidly growing energy demand and the increasing cost of traditional fossil fuel sources make solar energy an attractive alternative. With the proper support and investment, Khulna can exploit its solar energy potential to meet its energy needs, reduce its reliance on imported fossil fuels, and contribute to the overall sustainability of the region.

The Sundarbans

The Sundarbans, located in the southwestern part of Khulna, is a vast mangrove forest and a UNESCO World Heritage Site. It is the largest mangrove forest in the world, covering an area of over 10,000 square kilometers. The Sundarbans is home to a rich biodiversity, including the endangered Bengal tiger. The topography of the Sundarbans is characterized by a network of tidal rivers and channels, which create a unique and diverse habitat for its flora and fauna.

The Ganges Delta

The Ganges Delta, located in the southeastern part of Khulna, is formed by the Ganges and Brahmaputra rivers. It is a vast, low-lying area that is subject to frequent flooding. The topography of the Ganges Delta is characterized by a complex network of rivers, streams, and canals, which provide a vital source of water for agriculture and transportation. The delta is also home to a number of large cities, including Khulna, the capital of the division.

Jessore Airport

Jessore Airport (JSR) is the closest airport to Khulna, Bangladesh, located approximately 53 kilometers (33 miles) northwest of the city center. It is a domestic airport operated by the Civil Aviation Authority of Bangladesh (CAAB). Jessore Airport offers regular flights to Dhaka, the capital of Bangladesh, and other major cities within the country, including Chittagong, Rajshahi, and Saidpur. The airport has a single asphalt runway, measuring 1,220 meters (4,003 feet) in length. It is used by both commercial airlines and private charter flights.

Barisal Airport

Barisal Airport (BZL) is another airport that serves the Khulna region. It is located approximately 60 kilometers (37 miles) south of Khulna city in the neighboring district of Barisal. Barisal Airport is also a domestic airport operated by the CAAB. It offers flights to Dhaka, Chittagong, and Jessore. The airport has a single asphalt runway, measuring 1,050 meters (3,445 feet) in length. It is primarily used by smaller aircraft, including turboprop and piston-engine planes.

Economic Significance

Khulna, located in southwestern Bangladesh, serves as a major economic hub for the country. It is home to the second-largest seaport in Bangladesh, which handles significant volumes of trade between Bangladesh and neighboring countries. The port has fostered the growth of industries such as shipbuilding, textiles, and pharmaceuticals in and around the city. Additionally, Khulna boasts a thriving agricultural sector, specializing in jute cultivation and shrimp farming.

Attractions and Cultural Heritage

Despite its industrial importance, Khulna offers a diverse array of attractions for visitors. The Sundarbans, a UNESCO World Heritage Site, lies just south of the city and is home to a unique ecosystem of mangrove forests and wildlife. The city is also known for its rich cultural heritage, with notable landmarks such as the century-old Coomberkhali Temple, the elegant Badshahi Mosque, and the historic Laldighi Lake. Khulna is also home to several renowned educational institutions, including Khulna University and Khulna Medical College.