Climate and monthly weather forecast
Nepalgunj, Nepal

Nestled in the south of the majestic Himalayan country of Nepal, Nepalgunj experiences a Humid subtropical climate, designated as Cwa by the Köppen climate classification. This climate comes under the subtropical highland class of humid climates, characterized by a dry winter and a very wet summer.

Throughout the year, Nepalgunj experiences temperature fluctuations from a mild 9°C (48.2°F) during the coldest months to a scorching 37.4°C (99.3°F) at the peak of the hot season. The city also faces a significant variation in the amount of rainfall it receives, monthly average toggles between a barely-noticeable 5mm (0.2") to a torrential 431mm (16.97"). Further embellishing this climatic orchestra, Nepalgunj sees daylight hours range from a minimum of 10.4 hours to a maximum of 13.9 hours over the course of the year.

Most prominent among these patterns is the drastic increase in rainfall from May to July, coupled with a corresponding rise in temperature. By contrast, the period from November to January exhibits a dual decline in both temperature and precipitation, marking out the dry winter characteristic of the Cwa climate classification.

Considering the city's climate patterns, the optimal season for visiting Nepalgunj is from November to February. During this time, temperatures range between a minimum of 10.5°C (50.9°F) to a maximum of 28°C (82.4°F), providing a comfortable climate for sightseeing. Rainfall is also at its lowest during these months, with an average precipitation reaching a mere 5mm (0.2") in November and 12mm (0.47") in December, reducing the chance of travel disruptions due to inclement weather condition.

The months of June to August present the most challenging weather conditions for visitors in Nepalgunj. This period is characterized by both high temperatures, reaching up to 36.5°C (97.7°F), and heavy rainfall, with monthly average precipitation peaking at a whopping 431mm (16.97") in July. The high heat and humid conditions may pose difficulties, especially for those unaccustomed to such weather.

Spring in Nepalgunj, stretching between March and May, is marked by rapidly increasing temperatures. Starting with a minimum of 15.8°C (60.4°F) and maximum of 30.9°C (87.6°F) in March, it spikes up to a low of 24.6°C (76.3°F) and a high of 37.4°C (99.3°F) by May. Concurrently, rainfall begins to rise as well, transitioning from a relatively drier 15mm (0.59") in March to a wetter 71mm (2.8") in May.

Extreme heat and abundant rainfall dominate Nepalgunj's summers, which occur from June to August. Daytime temperatures typically hover from 26.4°C (79.5°F) to 36.5°C (97.7°F) or higher. Bulging storm clouds also become an everyday sight, leading to heavy downpours, especially in July when rainfall volume ascends to an impressive 431mm (16.97") on average. This is clearly the monsoon season, characterized by hot, wet days and cool, wet nights.

Autumn in Nepalgunj, transpiring from September to November, brings a steady decline in temperature and levels of precipitation. Average temperatures fall gradually from a maximum of 32.5°C (90.5°F) in September to 28°C (82.4°F) in November. Similarly, rainfall decreases from 235mm (9.25") in September to around 5mm (0.2") in November.

Winter, encapsulating the months of December to February, is the coolest season in Nepalgunj. Temperatures during these months vary between a cool 9°C (48.2°F) to a moderately warm 23.4°C (74.1°F). Accompanying the chill, the city becomes arid, receiving an average rainfall of 12mm (0.47") in December, which further decline in the following months. Winter features shorter days, with daylight ranging from 10.4 hours in December to 11.2 hours in February.

Despite the winter cold, Nepalgunj still experiences temperate conditions. January is the coldest month, with temperatures varying from 9°C (48.2°F) at night to 20.9°C (69.6°F) during the day. The city begins the year under remarkably cool conditions compared to the relatively scorching weather of the summer months. Weather in January »

The weather in February tends to be milder than in January. Temperatures progress upward, yet remain pleasant for outdoor activities. The amount of daylight also increases over the course of the month. Although February's rainfall level is relatively low, it is at 24mm (0.94") slightly higher than in the preceding month. Weather in February »

As the transition period between winter and summer, March brings a noticeable increase in warmth. March sees average temperatures ranging from 15.8°C (60.4°F) to 30.9°C (87.6°F). The months preceding and following March, February and April respectively, see lower average temperatures. Weather in March »

As Nepalgunj moves closer to the peak of summer, April arrives with higher temperatures and long sunny days. Voracious warmth between 20.8°C (69.4°F) and 36.5°C (97.7°F) is the standard feature for this month. Rising temperatures in April achieve their zenith in May. Weather in April »

Welcome to the pre-monsoon period, as May brings with it harsh heat and a sudden surge in rainfall. This surge sees the amount of rain leap to 71mm (2.8"). The striking contrast between the temperatures and rainfall from April to May is dramatic. Weather in May »

June arrives, and with it comes the onset of the monsoon season. The temperatures stay high, but the significant feature of June is the beginning of the monsoon rains. Monsoon rains amplify the rainfall from May's 71mm (2.8") to June's robust 199mm (7.83"). Weather in June »

July, the heart of the monsoon season, features both the year's highest temperatures and highest rainfall levels. The rainfall in July attains a staggering 431mm (16.97"). The dramatic rise in rainfall from June to July firmly establishes July as the month of heaviest rainfall. Weather in July »

August continues the monsoon season albeit with a slight decrease in rainfall. The incessant rainfall, while lower than July's record totals, remains substantial throughout August. The slight decline in rainfall from 431mm (16.97") in July to 354mm (13.94") in August marks the beginning of the monsoon retreat. Weather in August »

September sees the conclusion of the monsoon season as the city experiences a drastic reduction in rainfall to 235mm (9.25"). Average temperatures and daylight hours start their decline, signalling the onset of autumn. September offers respite from the height of the sweltering summer heat and torrential monsoon rains encountered in the previous months. Weather in September »

In October, Nepalgunj enters the autumn season, characterized by cooler temperatures and significantly reduced rainfall. Rainfall decreases dramatically from September's 235mm (9.25") to merely 58mm (2.28") in October. An arid spell follows the heavy monsoon rainfall, offering a much-needed break. Weather in October »

November brings further cooling and drying, setting the stage for the upcoming winter season. November's rainfall total is merely 5mm (0.2"), maintaining the trend of rainfall reduction established in October. November's relatively dry, cool daytime temperatures contrast sharply with the preceding monsoon summer months. Weather in November »

In the final month of the year, December, winter settles firmly over Nepalgunj. December's temperatures provide a stark contrast to the blistering heat of the summer months. The cool weather dominates, with rainfall remaining low at 12mm (0.47"). Weather in December »