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Nan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Nan.
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Climate overview of Nan
Nan, in Thailand's Nan Province, maintains fairly consistent very warm temperatures throughout the year. The area has a notably wet climate with heavy precipitation, especially during the monsoon season. Nan is a quiet northern town which sits in a valley surrounded by mountains where people come to see traditional Lanna culture and explore ancient temples without the crowds of other Thai destinations. Let's explore the climate details to provide you with a complete overview on when to visit.
Nan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Nan - and find the best time to visit.
Monthly Temperature in Nan
With minimal seasonal shifts, Nan experiences a constant climate year-round. Average maximum daytime temperatures range from a very hot 37°C (99°F) in April, the warmest time of the year, to a very warm 31°C (88°F) during cooler months like December.
At night, you can expect temperatures ranging from 25°C (77°F) in April to around 16°C (61°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Nan
Nan has a notably wet climate with abundant precipitation, recording 1618 mm (64 in) of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, August it receives heavy rainfall, averaging 352 mm (14 in) of precipitation, recorded across 22 rainy days. In contrast, the driest month February brings less rainfall, with 9.8 mm (0.4 in) over 2 rainy days. For more details, please visit our Nan Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Nan
For comfortable weather, consider visiting Nan in January, November and December. Conditions are usually least favourable in February, March, April, May, June, July, August and September.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very good
Feb
very hot
Mar
very hot
Apr
very hot
May
very hot
Jun
very wet
Jul
very wet
Aug
very wet
Sep
very wet
Oct
good
Nov
very good
Dec
very good
- Best overall: January, November and December
- Warmest weather: March and April
- Fewest rainy days: January, February, March and December
- Wettest months: May, June, July, August and September, when rainfall is highest.
- Seasonal pattern: Distinct dry (November to March) and wet (May to September) seasons
Frequently asked questions about the climate in Nan
What is the best time to visit Nan?
January, November and December typically offer the most optimal weather in Nan. In contrast, February, March, April, May, June, July, August and September tend to have less optimal conditions. Nan has distinct dry (November to March) and wet (May to September) seasons.
What temperatures can I expect in Nan?
Daytime highs range from 31°C (88°F) in December to 37°C (99°F) in April. Nighttime lows range from 16°C (61°F) to 25°C (77°F). Temperatures stay relatively stable year-round.
How much rain does Nan get?
Annual rainfall is around 1618 mm (64 in). August is the wettest month with 352 mm (14 in), while February is the driest with 9.8 mm (0.4 in).
Nan 3-Day Forecast
Nan on the map
Nan is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bangkok
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