September weather forecast
Nan, Thailand

Weather in September

September, the first month of the autumn in Nan, is still a hot month, with temperature in the range of an average low of 23.3°C (73.9°F) and an average high of 32.7°C (90.9°F).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 32.7°C (90.9°F). In September, in Nan, the average low-temperature is 23.3°C (73.9°F).

Heat index

The average heat index in September is appraised at a life-threatening hot 49°C (120.2°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

August and September, with an average relative humidity of 84%, are the most humid months in Nan.

Rainfall

In Nan, Thailand, it is raining for 18 days, with typically 204mm (8.03") of accumulated precipitation. In Nan, during the entire year, the rain falls for 124 days and collects up to 1234mm (48.58") of precipitation.

Daylight

The average length of the day in September in Nan is 12h and 15min.
On the first day of September in Nan, sunrise is at 06:02 and sunset at 18:31. On the last day of the month, sunrise is at 06:07 and sunset at 18:06 +07.

Sunshine

The average sunshine in September in Nan, Thailand, is 6h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 in September transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.
[Resources]

FAQ

What is the temperature in September in Nan?

In September, in Nan, Thailand, the average high-temperature is 32.7°C (90.9°F), and the average low-temperature is 23.3°C (73.9°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 49°C (120.2°F).

What are the most humid months in Nan?

August and September, with an average relative humidity of 84%, are most humid months in Nan, Thailand.

What is the average humidity in September in Nan?

In September, the average relative humidity is 84%.

How much does it rain in Nan in September?

In Nan, Thailand, during September, the rain falls for 18 days and regularly aggregates up to 204mm (8.03") of precipitation.

What is the average length of the day in September in Nan?

In September, the average day length in Nan is 12h and 15min.

When are sunrise and sunset in September in Nan?

In September, on the first day of the month, sunrise is at 06:02 and sunset at 18:31. On the last day of the month, sunrise is at 06:07 and sunset at 18:06 +07.

How long on average sun shines in September in Nan?

In Nan, the average sunshine duration in September is 6h.

What are the months with the highest UV index in Nan?

The months with the highest UV index in Nan, Thailand, are March through September, with an average maximum UV index of 12.

How high is the UV index in September in Nan?

In Nan, Thailand, the average daily maximum UV index in September is 12. A UV Index reading of 11, and higher, represents an excessive health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Nan, Thailand

Average temperature in September - Nan, Thailand
  • Average high temperature in September: 32.7°C

The warmest month (with the highest average high temperature) is April (37°C).
The month with the lowest average high temperature is December (29.6°C).

  • Average low temperature in September: 23.3°C

The month with the highest average low temperature is June (24°C).
The coldest month (with the lowest average low temperature) is January (14.2°C).

[Resources]

Average humidity in September
Nan, Thailand

Average humidity in September - Nan, Thailand
  • Average humidity in September: 84%

The months with the highest relative humidity are August and September (84%).
The month with the lowest relative humidity is March (65%).

[Resources]

Average rainfall in September
Nan, Thailand

Average rainfall in September - Nan, Thailand
  • Average rainfall in September: 203.5mm

The wettest month (with the highest rainfall) is August (273.2mm).
The driest month (with the least rainfall) is January (4.4mm).

[Resources]

Average rainfall days in September
Nan, Thailand

Average rainfall days in September - Nan, Thailand
  • Average rainfall days in September: 18 days

The month with the highest number of rainy days is August (22 days).
The months with the least rainy days are January and December (1 days).

[Resources]

Average daylight in September /
Average sunshine in September
Nan, Thailand

Average daylight in September / Average sunshine in September - Nan, Thailand
  • Average daylight in September: 12h and 15min

The month with the longest days is June (Average daylight: 13h and 14min).
The month with the shortest days is December (Average daylight: 11h and 2min).

  • Average sunshine in September: 6h

The months with the most sunshine are January, February, March and April (Average sunshine: 9h).
The months with the least sunshine are July and August (Average sunshine: 5h).

[Resources]

Average UV index in September
Nan, Thailand

Average UV index in September - Nan, Thailand
  • Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location