Verdict: Excellent month
Chiang Mai Weather in January
January runs warm in Chiang Mai, with daily highs around 28°C (82°F) and nights near 17°C (63°F). Rain is a non-issue, with only ~3 wet days in an average year. Overall, January is one of the best months of the year to be in Chiang Mai.
Average high
28°C / 82°F
Average low
17°C / 63°F
Rain days
~3
Precipitation
14 mm
What to pack for Chiang Mai in January
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Comfortable walking shoes — every guide on this site assumes you'll use them
January against the rest of the year
Warmest in Chiang Mai: Apr (36°C / 97°F) · Coolest: Jan (28°C / 82°F) · Wettest: Aug (~30 rain days)
28°
17°
Jan
30°
18°
Feb
35°
21°
Mar
36°
24°
Apr
34°
24°
May
32°
24°
Jun
31°
24°
Jul
30°
24°
Aug
30°
23°
Sep
29°
22°
Oct
29°
20°
Nov
28°
18°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)