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Chiang Rai weather by month
Check out Chiang Rai weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Chiang Rai (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 27 |
31 |
33 |
34 |
33 |
31 |
31 |
30 |
30 |
29 |
28 |
26 |
| Min temperature (night-time) | 12 |
13 |
16 |
20 |
22 |
23 |
23 |
22 |
22 |
20 |
17 |
12 |
| Heat & Humidity | L |
M |
H |
VH |
VH |
VH |
H |
H |
H |
H |
M |
L |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Chiang Rai
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 11 |
11 |
12 |
13 |
13 |
13 |
13 |
13 |
12 |
12 |
11 |
11 |
| UV Index (Maximum) | 8 |
10 |
11 |
11 |
11 |
11 |
11 |
11 |
11 |
10 |
8 |
7 |
Rainfall in Chiang Rai
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 2 |
1 |
3 |
10 |
17 |
19 |
22 |
24 |
18 |
12 |
6 |
3 |
| Average monthly rainfall (mm) | 14 |
8 |
21 |
81 |
202 |
216 |
295 |
386 |
258 |
135 |
55 |
23 |
More about Chiang Rai
Chiang Rai by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Thailand
The climate guide for Thailand (Chiang Rai) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Chiang Rai?
Chiang Rai has a hot tropical climate with a winter dry season.
Chiang Rai weather in January
Expect daytime maximum temperatures of 27°C in Chiang Rai, Thailand in January based on long-term weather averages. There are 8 hours of sunshine per day on average.
- 27°C max day temperature
27 - 8 hours of sunshine per day
- 2 days with some rainfall
2 - 12°C min night temperature
12 - 11 hours of daylight per day
11 - Low heat & humidity
L - 14 mm of monthly rainfall
14 - 8 (Very High) UV index
8
Chiang Rai weather in February
Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in February based on long-term weather averages. There are 9 hours of sunshine per day on average.
- 31°C max day temperature
31 - 9 hours of sunshine per day
- 1 day with some rainfall
1 - 13°C min night temperature
13 - 11 hours of daylight per day
11 - Moderate heat & humidity
M - 8 mm of monthly rainfall
8 - 10 (Very High) UV index
10
Chiang Rai weather in March
Expect daytime maximum temperatures of 33°C in Chiang Rai, Thailand in March and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average.
- 33°C max day temperature
33 - 8 hours of sunshine per day
- 3 days with some rainfall
3 - 16°C min night temperature
16 - 12 hours of daylight per day
12 - High heat & humidity
H - 21 mm of monthly rainfall
21 - 11+ (Extreme) UV index
11
Chiang Rai weather in April
Expect daytime maximum temperatures of 34°C in Chiang Rai, Thailand in April and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 81 mm of rainfall in the month.
- 34°C max day temperature
34 - 8 hours of sunshine per day
- 10 days with some rainfall
10 - 20°C min night temperature
20 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 81 mm of monthly rainfall
81 - 11+ (Extreme) UV index
11
Chiang Rai weather in May
Expect daytime maximum temperatures of 33°C in Chiang Rai, Thailand in May and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 202 mm of rainfall in the month.
- 33°C max day temperature
33 - 7 hours of sunshine per day
- 17 days with some rainfall
17 - 22°C min night temperature
22 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 202 mm of monthly rainfall
202 - 11+ (Extreme) UV index
11
Chiang Rai weather in June
Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in June and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 216 mm of rainfall in the month.
- 31°C max day temperature
31 - 5 hours of sunshine per day
- 19 days with some rainfall
19 - 23°C min night temperature
23 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 216 mm of monthly rainfall
216 - 11+ (Extreme) UV index
11
Chiang Rai weather in July
Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in July and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 22 days with some rainfall and typically 295 mm of rainfall in the month.
- 31°C max day temperature
31 - 5 hours of sunshine per day
- 22 days with some rainfall
22 - 23°C min night temperature
23 - 13 hours of daylight per day
13 - High heat & humidity
H - 295 mm of monthly rainfall
295 - 11+ (Extreme) UV index
11
Chiang Rai weather in August
Expect daytime maximum temperatures of 30°C in Chiang Rai, Thailand in August and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 24 days with some rainfall and typically 386 mm of rainfall in the month.
- 30°C max day temperature
30 - 5 hours of sunshine per day
- 24 days with some rainfall
24 - 22°C min night temperature
22 - 13 hours of daylight per day
13 - High heat & humidity
H - 386 mm of monthly rainfall
386 - 11+ (Extreme) UV index
11
Chiang Rai weather in September
Expect daytime maximum temperatures of 30°C in Chiang Rai, Thailand in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 258 mm of rainfall in the month.
- 30°C max day temperature
30 - 6 hours of sunshine per day
- 18 days with some rainfall
18 - 22°C min night temperature
22 - 12 hours of daylight per day
12 - High heat & humidity
H - 258 mm of monthly rainfall
258 - 11+ (Extreme) UV index
11
Chiang Rai weather in October
Expect daytime maximum temperatures of 29°C in Chiang Rai, Thailand in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 135 mm of rainfall in the month.
- 29°C max day temperature
29 - 7 hours of sunshine per day
- 12 days with some rainfall
12 - 20°C min night temperature
20 - 12 hours of daylight per day
12 - High heat & humidity
H - 135 mm of monthly rainfall
135 - 10 (Very High) UV index
10
Chiang Rai weather in November
Expect daytime maximum temperatures of 28°C in Chiang Rai, Thailand in November based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 55 mm of rainfall in the month.
- 28°C max day temperature
28 - 7 hours of sunshine per day
- 6 days with some rainfall
6 - 17°C min night temperature
17 - 11 hours of daylight per day
11 - Moderate heat & humidity
M - 55 mm of monthly rainfall
55 - 8 (Very High) UV index
8
Chiang Rai weather in December
Expect daytime maximum temperatures of 26°C in Chiang Rai, Thailand in December based on long-term weather averages. There are 7 hours of sunshine per day on average.
- 26°C max day temperature
26 - 7 hours of sunshine per day
- 3 days with some rainfall
3 - 12°C min night temperature
12 - 11 hours of daylight per day
11 - Low heat & humidity
L - 23 mm of monthly rainfall
23 - 7 (High) UV index
7
More about Chiang Rai
Chiang Rai by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Thailand
- Explore latest special offers & online deals from TUI
- Free child places & £0 deposits with direct debit available
- Book summer & winter sun holidays in 2026/2027
The climate guide for Thailand (Chiang Rai) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Compare Chiang Rai weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Chiang Rai, Thailand and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
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