Climate and monthly weather forecastLahan, Nepal

The climate of Lahan

Lahan, Nepal falls squarely within the Humid subtropical climate category as classified by the Köppen climate system. This classification, also identified as 'Cwa', is distinguished by heavy summer monsoons and drier winters. Surrounded by rolling hills with the Chure ranges to the south, Lahan experiences significant shifts in climatic conditions throughout the year.

With summer temperatures that can peak at 38.2°C (100.8°F) in May, it is not uncommon for the mercury to remain above 30°C (86°F) from April to October. The winter months of December and January are much cooler, with average low temperatures of 13.3°C (55.9°F) to 11.1°C (52°F) respectively. Humidity in Lahan varies considerably throughout the year, with the lowest levels recorded in April at 30%, and the highest, 74%, in September.

Rainfall patterns reflect the monsoon character of the climate, with precipitation peaking sharply from June to September. Rainfall in July, the wettest month, averages 253mm (9.96"), significantly higher than in May's 55mm (2.17"). There are most rain-soaked days in July - 25.8 days to be exact.

The city enjoys an ample amount of sunshine, recording highest daily sunshine in May with 11.8 hours. Conversely, the shortest duration of daylight is predictably in December with 10.5 hours. The most overcast month is September, with a cloud percentage of 35, while in December it is down to 7.

Wind speeds in Lahan oscillate between 6.2km/h (3.9mph) in December to 11.9km/h (7.4mph) in May and July, while wind gusts can reach up to 17km/h (10.6mph) in May, providing some relief from the heat.

The best time to visit Lahan

Given the climate considerations, the most ideal time to visit Lahan falls between November and April. During these months, visitors can expect moderate temperatures, ranging between 24.5°C (76.1°F) in December to 37.3°C (99.1°F) in April, lower humidity levels and lesser rain - with February averaging the least at 4mm (0.16"). Additionally, daylight hours are considerable, between 10.8 hours in November to 12.8 hours in April, providing abundant time for outdoor activities.

The worst time to visit Lahan

The months of June to September constitute the most challenging period to visit. This period is characterised by high humidity percentages (above 70 percent) and torrential summer monsoon rains, with July being the most rainy month recording 253mm (9.96") of precipitation. Additionally, the high temperatures coupled with intense humidity can make outdoor activities uncomfortable.

Spring weather in Lahan

Lahan experiences spring between February and April. This season witnesses a steady rise in temperatures that range from 27.3°C (81.1°F) in February to 37.3°C (99.1°F) in April. Concurrently, the sunshine hours increase while rainfall remains low, reaching a high of 23mm (0.91") in April.

Summer weather in Lahan

Summer, which spans from May to July, brings intense heat, with temperatures climbing to 38.2°C (100.8°F) in May. The humidity this time of year starts increasing in May and reaches its peak in July at 71%. Coupled with high rainfall, July witnesses 253mm (9.96") together with 25.8 rainy days.

Autumn weather in Lahan

Autumn season, spanning from August to October sees a decrease in temperature, dropping to 30.5°C (86.9°F) by October. Rainfall begins to subside from 161mm (6.34") in August to 33mm (1.3") by October. The humidity remains high until September before it starts to ease in October.

Winter weather in Lahan

Winter descends on Lahan from November and lasts until January. During these months, the temperatures fall to a low of 11.1°C (52°F) in January. Humidity remains low, ranging between 55% to 59%. The rainfall is at its minimal too, with December and January both witnessing a mere 4mm (0.16") of precipitation. This is the time when the climate is at its most amiable.

Weather in January

A crisp start to the year, the weather in January in Lahan, Nepal is cool, dominated by clear conditions, gentle winds, and relatively high pressure systems. Winter clothes might be needed, especially for evenings when temperatures can go as low as 11.1°C (52°F). Weather in January »

Weather in February

The transition from winter to spring in February brings a slight increase in temperatures and humidity levels, making it comfortably warm. Compared to January, rainfall increases to 16mm (0.63") spread over three days. The weather is often bright as the sunshine duration and daylight hours continue to rise. Weather in February »

Weather in March

In March, the weather starts to hint at the approaching summer with temperatures reaching as high as 32.9°C (91.2°F). Precipitation remains relatively low, and the increase in heat is accompanied by a dip in humidity levels. The clear, blue skies of Lahan often unmatched, provide fantastic photographic opportunities. Weather in March »

Weather in April

April in Lahan, Nepal signifies the halt of spring and the commencement of the sweltering summer season. The heat is felt more with the temperature highs escalating and rainfall slightly increasing. With humidity at 30%, it's a dry heat that locals and visitors experience this month. Weather in April »

Weather in May

May is the time when summer's grip firmly establishes itself over Lahan, Nepal, and its surroundings. The weather is characterized by some of the hottest days, with rainfall levels going up to 55mm (2.17"). Compared to April, clouds become more frequent, marking the start of the monsoon season. Weather in May »

Weather in June

June sees a stark shift in the city's weather patterns. The rainfall, going up to 117mm (4.61") over 21.2 days, makes June the start of the rainy season. Despite this, Lahan, Nepal remains a city of sunshine, with extended daylight hours. Weather in June »

Weather in July

July, often known as the "heart of monsoon", offers the heaviest rainfall in Lahan, Nepal, with precipitation reaching a staggering 253mm (9.96"). Coinciding with this water-rich period, the temperatures, although high, give some respite from the intense heat felt in June. Weather in July »

Weather in August

August witnesses a slight decline in rainfall from its preceding month, and the temperatures stabilize. Because of the monsoon influence, cloud coverage is evident and direct sunlight is considerably reduced. The wind picks down slightly from July's patterns while keeping an almost steady course. Weather in August »

Weather in September

September brings a sense of respite to the people of Lahan, Nepal as it marks the end of the monsoon season. A noticeable dip in rainfall, down to 147mm (5.79"), signifies the start of the transition into autumn. Temperatures remain relatively high and humidity begins its descent. Weather in September »

Weather in October

October in Lahan, Nepal is a significant shift from the rainfall-heavy preceding months, with rainfall levels plummeting to just 33mm (1.3"). The dip in temperatures indicates the approach of the winter season. This period is characterized by moderate winds, clear skies, and high visibility, opening the city and its magnificent views to residents and visitors. Weather in October »

Weather in November

As winter knocks on the door, November witnesses a further decrease in temperature and rainfall in Lahan, Nepal. The city experiences just 2.3 days of rainfall for the entire month, making it one of the driest months of the year. Weather in November »

Weather in December

December marks the onset of the winter season in Lahan, Nepal, with temperatures continuing on a downward trend from November. The overall weather becomes cooler with the city recording a low of 13.3°C (55.9°F). Rainfall totals a mere 4mm (0.16") spread over 2.4 days, reinforcing the city's reputation as a winter wonderland. Weather in December »