Weather in Chiang Rai for December 2025
Until now, December 2025 in Chiang Rai is slightly cooler than the historical average by -1.3 °C.
The forecast for the next days in Chiang Rai predicts temperatures to be around 27 °C, close to the historical average.
In general, the average temperature in Chiang Rai at the beginning of December is 27.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 27.4 °C by the end of December.
Chiang Rai experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 25.4 mm.
Is December a good time to visit Chiang Rai? check out the best time to travel to Chiang Rai page.
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Chiang Rai Weather December
Temperatures trend during December in Chiang Rai
December weather in Chiang Rai day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Partly cloudy | 27° /15° | 0 mm | 6 | |
| 2 Dec. |  Patchy rain possible | 28° /16° | 0.5 mm | 6 | |
| 3 Dec. |  Fog | 28° /17° | 0.2 mm | 6 | |
| 4 Dec. | Fog | 28° /17° | 0.4 mm | 6 | |
| 5 Dec. | Light rain shower | 28° /17° | 3 mm | 6 | |
| 6 Dec. | Fog | 28° /18° | 1.2 mm | 6 | |
| 7 Dec. | Light rain shower | 28° /18° | 3 mm | 6 | |
| 8 Dec. | Light rain shower | 28° /18° | 2.1 mm | 6 | |
| 9 Dec. |  Patchy light rain | 28° /18° | 2.2 mm | 6 | |
| 10 Dec. | Patchy light drizzle | 28° /17° | 0.5 mm | 6 | |
| 11 Dec. | Mist | 28° /17° | 0.2 mm | 6 | |
| 12 Dec. | Light rain shower | 28° /17° | 0.5 mm | 6 | |
| 13 Dec. | Fog | 29° /18° | 0.9 mm | 6 | |
| 14 Dec. | Light rain shower | 26° /18° | 2 mm | 6 | |
| 15 Dec. | Patchy rain possible | 26° /17° | 1.4 mm | 6 | |
| 16 Dec. |  Sunny | 26° /17° | 0.4 mm | 6 | |
| 17 Dec. | Patchy rain possible | 27° /17° | 1.7 mm | 1.5 | |
| 18 Dec. | Patchy rain possible | 27° /16° | 3.9 mm | 1.5 | |
| 19 Dec. | Patchy rain possible | 27° /17° | 1.8 mm | 1.4 | |
| 20 Dec. | Sunny | 27° /16° | 0 mm | 1.5 | |
| 21 Dec. | Sunny | 27° /15° | 0 mm | 1.8 | |
| 22 Dec. | Sunny | 26° /15° | 0 mm | 6 | |
| 23 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 24 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 25 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 26 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 27 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 28 Dec. | Sunny | 28° /15° | 0 mm | 6 | |
| 29 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 30 Dec. | Sunny | 27° /15° | 0 mm | 6 | |
| 31 Dec. | Sunny | 29° /15° | 0 mm | 7 | |
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Chiang Rai weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Sunny |
| Temperatures | 27°/18° | 27°/17° | 29°/14° |
| Rainfall | 122 mm | 25 mm | 6 mm |
| Wind | 4.4 km/h | 4.7 km/h | 5.7 km/h |
| Humidity | 82% | 76% | 58% |
| Rainy days | 17 days | 7 days | 3 days |
| Dry days | 13 days | 24 days | 28 days |
Planning a trip to Chiang Rai? Discover the best time to visit
Chiang Rai in December - FAQ
What to pack to Chiang Rai in December?
As you prepare for your trip to Chiang Rai in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Chiang Rai, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
December rainfall patterns in Chiang Rai
UV exposure in Chiang Rai during December
Quick links
Where is Chiang Rai?Get accurate weather forecasts for Chiang Rai, located at latitude 19.909 and longitude 99.833. Stay updated with localized weather information tailored for Chiang Rai.