September weather forecast
Jomsom, Nepal

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The lake Dhumba in Jomsom, Nepal, with a background landscape of the vast mountains
The lake Dhumba in Jomsom, Nepal, with a background landscape of the vast mountains

Weather in September

September brings a decrease in rainfall intensity, marking the end of the monsoon season in Jomsom. Temperatures hover from a chilly 3°C (37.4°F) to a pleasant 15°C (59°F). With the retreating rains, the terrains of Jomsom start to dry, and a significant change in the landscape is noticeable. The balance of sunlight, reduced rain and mild temperatures makes September a popular month for tourists. There is a dramatic reduction in rainfall days from August, effectively halving the number of rainy days.

Temperature

September's onset brings an average high-temperature of a moderate 15°C (59°F), showing a minute difference from August's 16°C (60.8°F). Despite a significant daily temperature range, Jomsom's temperature falls to a steady low-temperature average of 3°C (37.4°F) in September.

Rainfall

In Jomsom, in September, during 14 rainfall days, 72mm (2.83") of precipitation is typically accumulated. In Jomsom, during the entire year, the rain falls for 104 days and collects up to 659mm (25.94") of precipitation.

Daylight

In Jomsom, the average length of the day in September is 12h and 20min.
On the first day of September in Jomsom, sunrise is at 5:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 5:57 pm +0545.

Sunshine

In September, the average sunshine is 5h.

UV index

April through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 12 during September leads to these advisories:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What is the usual temperature for Jomsom in September?

The high-temperature, in September, in Jomsom, is 15°C (59°F), while the low-temperature averages to 3°C (37.4°F).

How many days does it rain in September?

In Jomsom, during September, the rain falls for 14 days and regularly aggregates up to 72mm (2.83") of precipitation.

How many hours of daylight does Jomsom have in September?

In Jomsom, the average day length in September is 12h and 20min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 5:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 5:57 pm +0545.

How long on average sun shines in September?

In Jomsom, the average sunshine duration in September is 5h.

What are the months with the highest UV index?

The months with the highest UV index are April through September, with an average maximum UV index of 12.

What is the UV index intensity in September in Jomsom?

In September, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Jomsom, Nepal

Average temperature in September - Jomsom, Nepal
  • Average high temperature in September: 15°C

The warmest months (with the highest average high temperature) are June and July (17°C).
The month with the lowest average high temperature is January (3°C).

  • Average low temperature in September: 3°C

The months with the highest average low temperature are July and August (6°C).
The coldest month (with the lowest average low temperature) is January (-14°C).

Average rainfall in September
Jomsom, Nepal

Average rainfall in September - Jomsom, Nepal
  • Average rainfall in September: 72mm

The wettest month (with the highest rainfall) is August (112mm).
The driest month (with the least rainfall) is November (14mm).

Average rainfall days in September
Jomsom, Nepal

Average rainfall days in September - Jomsom, Nepal
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (21 days).
The months with the least rainy days are November and December (2 days).

Average daylight in September /
Average sunshine in September
Jomsom, Nepal

Average daylight in September / Average sunshine in September - Jomsom, Nepal
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 5h

The month with the most sunshine is April (Average sunshine: 9h).
The months with the least sunshine are July and August (Average sunshine: 4h).

Average UV index in September
Jomsom, Nepal

Average UV index in September - Jomsom, Nepal
  • Average UV index in September: 12

The months with the highest UV index are April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 5).

Jomsom, Nepal

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