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Weather extremes

How extreme does Chiang Rai's weather get?

The hottest, coldest, wettest and snowiest days Chiang Rai has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Chiang Rai station 3 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Chiang Rai has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F May 19, 2019

That is about 15°F hotter than a normal May afternoon in Chiang Rai (typical high near 92°F).

The three most extreme on record

1 107°F May 19, 2019
2 106°F Apr 11, 2016
3 106°F Apr 15, 2016
❄️ Coldest night
35°F Jan 2, 1974

About 21°F colder than a normal January night in Chiang Rai (typical low near 56°F).

The three most extreme on record

1 35°F Jan 2, 1974
2 35°F Jan 5, 1974
3 35°F Jan 6, 1974
🌧️ Most rain in one day
7.93 in Aug 12, 2022

About 55% of a typical August's rain in a single day (Chiang Rai averages roughly 14.5 in across the month).

The three most extreme on record

1 7.93 in Aug 12, 2022recent
2 6.39 in Aug 9, 2013
3 6.21 in Jul 9, 1982

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

10°30°50°70°90°110°130° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Chiang Rai's record heat sits well above even a hot day for the season — May's 107°F is about 15°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Chiang Rai's warmest days reach the mid-90s°F and its coldest nights drop to the mid-50s°F. But across the record it has gone as high as 107°F and as low as 35°F. A single day has delivered over 8 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Chiang Rai, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →