Temperature
Hot by day, warm at night.
86°Ftypical September high
Typical range
September climate
September in Railay Beach
Thailand · Southeast Asia
Typhoon risk near peak and humid air are the main limitations.
Wet but workable
Daytime high
86°F
Lows around 78°F
Rain
Rain most days
Sun
8.5 h/day
Air feel
Very humid
Sea temp
84°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days. About 26 wet days, more than in most months.
87%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
8.5 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
95%September Heat feel
Humid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 92° and nights feel near 87°.
WarmHotSwelteringNight hours
Clear sky
Overcast skies this month.
11%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
6 mphSeptember Calm
Sea temperature
84°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 83°F, and early evening stays near 82°F.
Avg temp Typical range
Morning82°F
Feels 91°F
Rain58%
Cloud88%
Humid airVery high
Sun intensityModerate
Midday85°F
Feels 93°F
Rain66%
Cloud88%
Humid airVery high
Sun intensityStrong
Late afternoon83°F
Feels 91°F
Rain60%
Cloud88%
Humid airVery high
Sun intensityModerate
Early evening82°F
Feels 90°F
Rain40%
Cloud87%
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% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 88 | 76 | 2.4 | 8 | 10.3 | 79 | 83 |
| Feb | 90 | 76 | 2.0 | 7 | 10.8 | 76 | 83 |
| Mar | 91 | 77 | 4.3 | 14 | 10.6 | 79 | 85 |
| Apr | 90 | 78 | 7.9 | 23 | 10.5 | 84 | 86 |
| May | 89 | 79 | 11.0 | 27 | 9.7 | 86 | 86 |
| Jun | 87 | 78 | 10.1 | 25 | 9.5 | 86 | 85 |
| Jul | 87 | 78 | 10.5 | 25 | 9.2 | 87 | 85 |
| Aug | 87 | 78 | 10.7 | 25 | 9.2 | 87 | 85 |
| Sep | 86 | 78 | 12.4 | 26 | 8.5 | 87 | 84 |
| Oct | 87 | 77 | 14.0 | 28 | 8.1 | 88 | 84 |
| Nov | 87 | 77 | 10.7 | 24 | 8.3 | 87 | 84 |
| Dec | 87 | 76 | 5.1 | 14 | 9.3 | 84 | 83 |
Similar climates
Similar
Similar travel styleKrabiThailandSimilar travel styleBoracayPhilippinesSimilar travel stylePhuketThailandSimilar travel styleBaliIndonesia
Want a side-by-side climate view? Compare Railay Beach with Krabi.
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: Aug 22, 2026
Data & methodology