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When to go · Climate guide
Thailandwhen to go
Thailand's national averages run from 29 °C in December to 35 °C in April, with rainfall between 23 mm in February and 284 mm in September and 3.6–8.2 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are December, January and February. Its 77 regions span 29–35 °C in annual mean temperature, so the national figure hides a good deal.
- Capital
- Bangkok
- Region
- Asia
- TZ
- Asia/Bangkok
- Area
- 513,909 km²
Best months to visit
When Thailand shines
Climate at a glance · 10-year ERA5
A decade of weather, in one page
— daytime high— overnight low▬ typical range
View data table
| Month | Average daytime high (°C) | Average overnight low (°C) | Typical low | Typical high |
|---|---|---|---|---|
| January | 30.1 | 18.6 | 15.0 | 32.5 |
| February | 32.0 | 19.6 | 17.1 | 34.7 |
| March | 34.3 | 22.5 | 19.7 | 36.8 |
| April | 35.0 | 24.5 | 22.2 | 38.3 |
| May | 33.6 | 25.2 | 24.0 | 37.3 |
| June | 32.3 | 25.0 | 24.3 | 34.1 |
| July | 31.4 | 24.7 | 24.0 | 33.6 |
| August | 31.2 | 24.6 | 23.9 | 33.1 |
| September | 31.1 | 24.3 | 23.6 | 32.8 |
| October | 30.9 | 23.4 | 21.5 | 32.6 |
| November | 30.4 | 21.7 | 19.1 | 32.6 |
| December | 29.5 | 19.1 | 15.5 | 32.3 |
View data table
| Month | Rainfall (mm) |
|---|---|
| January | 29 |
| February | 23 |
| March | 38 |
| April | 80 |
| May | 188 |
| June | 193 |
| July | 254 |
| August | 260 |
| September | 284 |
| October | 185 |
| November | 87 |
| December | 38 |
View data table
| Month | Sunshine hours (hr / day) |
|---|---|
| January | 7.2 |
| February | 8.1 |
| March | 8.2 |
| April | 7.7 |
| May | 5.9 |
| June | 4.7 |
| July | 3.6 |
| August | 3.6 |
| September | 3.8 |
| October | 4.9 |
| November | 5.9 |
| December | 6.8 |
— average▬ typical range
View data table
| Month | Average wind speed (km/h) | Typical low | Typical high |
|---|---|---|---|
| January | 7.5 | 5.2 | 11.6 |
| February | 7.6 | 5.4 | 11.3 |
| March | 7.1 | 5.6 | 9.1 |
| April | 6.8 | 4.7 | 8.9 |
| May | 6.2 | 4.2 | 8.7 |
| June | 7.5 | 5.2 | 9.6 |
| July | 7.8 | 4.8 | 10.9 |
| August | 7.6 | 4.8 | 11.0 |
| September | 6.0 | 4.0 | 8.8 |
| October | 6.0 | 4.0 | 8.7 |
| November | 7.3 | 4.2 | 11.3 |
| December | 8.4 | 5.2 | 12.3 |
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Snow depth
Snow depth for Thailand is part of the Premium map and its district-level detail. See what Premium includes.
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Sea surface temperature
Sea surface temperature for Thailand is part of the Premium map and its district-level detail. See what Premium includes.
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Heat index
Heat index for Thailand is part of the Premium map and its district-level detail. See what Premium includes.
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Humidity
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What’s open · year round
Things to do in Thailand
Thailand closes something in June–September; nothing below runs the whole year.
- ClosedSimilan and Surin Islands
Closed June–September · limited May, October · at its best December–April
Sources: nationthailand.com, thainationalparks.com
Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.
77 regions
Thailand, taken apart
- Amnat Charoen30–36 °C yr
- Ang Thong32–38 °C yr
- Bangkok31–35 °C yr
- Bueng Kan29–35 °C yr
- Buri Ram30–36 °C yr
- Chachoengsao31–35 °C yr
- Chai Nat31–38 °C yr
- Chaiyaphum29–34 °C yr
- Chanthaburi30–33 °C yr
- Chiang Mai27–34 °C yr
- Chiang Rai28–35 °C yr
- Chon Buri31–34 °C yr
- Chumphon29–33 °C yr
- Kalasin30–36 °C yr
- Kamphaeng Phet30–36 °C yr
- Kanchanaburi29–35 °C yr
- Khon Kaen30–36 °C yr
- Krabi30–34 °C yr
- Lampang29–36 °C yr
- Lamphun29–36 °C yr
- Loei28–34 °C yr
- Lopburi31–37 °C yr
- Mae Hong Son28–35 °C yr
- Maha Sarakham30–36 °C yr
- Mukdahan29–35 °C yr
- Nakhon Nayok31–35 °C yr
- Nakhon Pathom32–36 °C yr
- Nakhon Phanom29–35 °C yr
- Nakhon Ratchasima29–35 °C yr
- Nakhon Sawan31–38 °C yr
- Nakhon Si Thammarat30–34 °C yr
- Nan29–35 °C yr
- Narathiwat28–33 °C yr
- Nong Bua Lam Phu29–36 °C yr
- Nong Khai29–36 °C yr
- Nonthaburi32–36 °C yr
- Pathum Thani32–36 °C yr
- Pattani29–33 °C yr
- Phang Nga29–33 °C yr
- Phatthalung29–33 °C yr
- Phayao29–36 °C yr
- Phetchabun30–35 °C yr
- Phetchaburi29–33 °C yr
- Phichit32–38 °C yr
- Phitsanulok30–36 °C yr
- Phra Nakhon Si Ayutthaya32–37 °C yr
- Phrae30–36 °C yr
- Phuket28–29 °C yr
- Prachin Buri30–35 °C yr
- Prachuap Khiri Khan29–33 °C yr
- Ranong29–33 °C yr
- Ratchaburi29–35 °C yr
- Rayong31–33 °C yr
- Roi Et30–36 °C yr
- Sa Kaeo31–35 °C yr
- Sakon Nakhon29–35 °C yr
- Samut Prakan31–34 °C yr
- Samut Sakhon30–33 °C yr
- Samut Songkhram30–34 °C yr
- Saraburi31–36 °C yr
- Satun29–33 °C yr
- Si Sa Ket30–36 °C yr
- Sing Buri32–38 °C yr
- Songkhla30–34 °C yr
- Sukhothai31–38 °C yr
- Suphan Buri31–37 °C yr
- Surat Thani30–34 °C yr
- Surin30–36 °C yr
- Tak28–34 °C yr
- Trang30–34 °C yr
- Trat29–32 °C yr
- Ubon Ratchathani30–36 °C yr
- Udon Thani29–36 °C yr
- Uthai Thani28–35 °C yr
- Uttaradit30–36 °C yr
- Yala29–33 °C yr
- Yasothon30–36 °C yr
Safety · 6 governments
What the governments say about Thailand
Combined advisory · most-cautious-wins
Exercise increased caution
Highest level across 6 governments · Advisory last changed
See breakdown by countryHide breakdown
CA
Level 2Exercise increased caution
Exercise increased caution
DE
Level 1Exercise normal precautions
Exercise normal precautions
NL
Level 2Exercise increased caution
Exercise increased caution
UK
Level 1Exercise normal precautions
Exercise normal precautions
US
Level 1Exercise normal precautions
Exercise normal precautions
Parts of Thailand carry a higher advisory — up to level 4, "Do not travel". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.
Month by month
A year in Thailand, in order
- JanJanuary30.1°C · 29 mm · 7.2 hr/day
Around 30 °C with 29 mm of rain and 7.2 hours of sun a day.
Around 30 °C with 29 mm of rain and 7.2 hours of sun a day.
- FebFebruary32.0°C · 23 mm · 8.1 hr/day
Around 32 °C with 23 mm of rain and 8.1 hours of sun a day.
Around 32 °C with 23 mm of rain and 8.1 hours of sun a day.
- MarMarch34.3°C · 38 mm · 8.2 hr/day
Around 34 °C with 38 mm of rain and 8.2 hours of sun a day.
Around 34 °C with 38 mm of rain and 8.2 hours of sun a day.
- AprApril35.0°C · 80 mm · 7.7 hr/day
Around 35 °C with 80 mm of rain and 7.7 hours of sun a day.
Around 35 °C with 80 mm of rain and 7.7 hours of sun a day.
- MayMay33.6°C · 188 mm · 5.9 hr/day
Around 34 °C with 188 mm of rain and 5.9 hours of sun a day.
Around 34 °C with 188 mm of rain and 5.9 hours of sun a day.
- JunJune32.3°C · 193 mm · 4.7 hr/day
Around 32 °C with 193 mm of rain and 4.7 hours of sun a day.
Around 32 °C with 193 mm of rain and 4.7 hours of sun a day.
- JulJuly31.4°C · 254 mm · 3.6 hr/day
Around 31 °C with 254 mm of rain and 3.6 hours of sun a day.
Around 31 °C with 254 mm of rain and 3.6 hours of sun a day.
- AugAugust31.2°C · 260 mm · 3.6 hr/day
Around 31 °C with 260 mm of rain and 3.6 hours of sun a day.
Around 31 °C with 260 mm of rain and 3.6 hours of sun a day.
- SepSeptember31.1°C · 284 mm · 3.8 hr/day
Around 31 °C with 284 mm of rain and 3.8 hours of sun a day.
Around 31 °C with 284 mm of rain and 3.8 hours of sun a day.
- OctOctober30.9°C · 185 mm · 4.9 hr/day
Around 31 °C with 185 mm of rain and 4.9 hours of sun a day.
Around 31 °C with 185 mm of rain and 4.9 hours of sun a day.
- NovNovember30.4°C · 87 mm · 5.9 hr/day
Around 30 °C with 87 mm of rain and 5.9 hours of sun a day.
Around 30 °C with 87 mm of rain and 5.9 hours of sun a day.
- DecDecember29.5°C · 38 mm · 6.8 hr/day
Around 29 °C with 38 mm of rain and 6.8 hours of sun a day.
Around 29 °C with 38 mm of rain and 6.8 hours of sun a day.
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