Temperature
Hot by day, warm at night.
90°Ftypical September high
Typical range
September climate
September in Chiang Mai
Thailand · Southeast Asia
Not the best time: Humid air is the main limitation.
Not an ideal month
Daytime high
90°F
Lows around 76°F
Rain
Rain most days
Sun
6 h/day
Air feel
Very humid
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days. About 23 wet days, more than in most months.
77%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
5.8 hSeptember sunshine
Heat & humidity by month
Very hot days with very humid air.
79%September Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 99° and nights feel near 87°.
CoolComfortableWarmHotSwelteringNight hours
Clear sky
Overcast skies this month.
15%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
2 mphSeptember Calm
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 87°F, easing to about 83°F in early evening.
Avg temp Typical range
Morning82°F
Feels 92°F
Rain47%
Cloud83%
Humid airVery high
Sun intensityModerate
Midday89°F
Feels 98°F
Rain44%
Cloud80%
Humid airVery high
Sun intensityStrong
Late afternoon88°F
Feels 97°F
Rain47%
Cloud82%
Humid airVery high
Sun intensityModerate
Early evening83°F
Feels 93°F
Rain39%
Cloud86%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 87 | 60 | 0.3 | 1 | 9.1 | 72 |
| Feb | 92 | 64 | 0.2 | 1 | 9.8 | 62 |
| Mar | 97 | 70 | 0.4 | 2 | 9.0 | 57 |
| Apr | 100 | 76 | 1.1 | 5 | 9.0 | 57 |
| May | 96 | 78 | 4.1 | 14 | 8.6 | 68 |
| Jun | 93 | 79 | 4.4 | 18 | 6.0 | 73 |
| Jul | 91 | 78 | 6.9 | 22 | 5.0 | 77 |
| Aug | 90 | 77 | 8.8 | 24 | 4.6 | 81 |
| Sep | 90 | 76 | 9.1 | 23 | 5.8 | 83 |
| Oct | 90 | 74 | 4.9 | 15 | 7.2 | 83 |
| Nov | 88 | 68 | 1.0 | 5 | 7.8 | 81 |
| Dec | 85 | 62 | 0.3 | 1 | 8.3 | 78 |
Similar climates
Similar
Similar travel styleHo Chi Minh CityVietnamSimilar travel styleLuang PrabangLaosSimilar travel styleMumbaiIndiaSimilar travel styleManilaPhilippines
Want a side-by-side climate view? Compare Chiang Mai with Ho Chi Minh City.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology