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Exercise increased caution
Thailand · Month guide
Thailand in December
Around 29 °C with 38 mm of rain and 6.8 hours of sun a day.
December is one of the strongest months to visit Thailand. Around 29 °C with 38 mm of rain and 6.8 hours of sun a day. Use the regional grid below to find where this month works best — national averages hide the swings between coast, highlands, and inland.
Perfect match
Thailand · December
What the weather usually does
Thailand · typical month
- Day / night19 – 29 °CYear range 19 – 35 °C
- Rainfall38 mmYear range 23 – 284 mm
- Sunshine6.8 hr / dayYear range 3.6 – 8.2 hr / day
What’s open · December
Things to do in Thailand in December
Nothing is closed in December, and 1 thing below is at its best.
- At its bestSimilan and Surin Islands
the park is open and the Andaman Sea is at its calmest and clearest
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 · current month
Thailand, taken apart
- Amnat Charoen30°C now · 30–36 °C yr
- Ang Thong32°C now · 32–38 °C yr
- Bangkok31°C now · 31–35 °C yr
- Bueng Kan29°C now · 29–35 °C yr
- Buri Ram30°C now · 30–36 °C yr
- Chachoengsao31°C now · 31–35 °C yr
- Chai Nat31°C now · 31–38 °C yr
- Chaiyaphum29°C now · 29–34 °C yr
- Chanthaburi30°C now · 30–33 °C yr
- Chiang Mai27°C now · 27–34 °C yr
- Chiang Rai28°C now · 28–35 °C yr
- Chon Buri31°C now · 31–34 °C yr
- Chumphon29°C now · 29–33 °C yr
- Kalasin30°C now · 30–36 °C yr
- Kamphaeng Phet30°C now · 30–36 °C yr
- Kanchanaburi29°C now · 29–35 °C yr
- Khon Kaen30°C now · 30–36 °C yr
- Krabi30°C now · 30–34 °C yr
- Lampang29°C now · 29–36 °C yr
- Lamphun29°C now · 29–36 °C yr
- Loei28°C now · 28–34 °C yr
- Lopburi31°C now · 31–37 °C yr
- Mae Hong Son28°C now · 28–35 °C yr
- Maha Sarakham30°C now · 30–36 °C yr
- Mukdahan29°C now · 29–35 °C yr
- Nakhon Nayok31°C now · 31–35 °C yr
- Nakhon Pathom32°C now · 32–36 °C yr
- Nakhon Phanom29°C now · 29–35 °C yr
- Nakhon Ratchasima29°C now · 29–35 °C yr
- Nakhon Sawan31°C now · 31–38 °C yr
- Nakhon Si Thammarat30°C now · 30–34 °C yr
- Nan29°C now · 29–35 °C yr
- Narathiwat28°C now · 28–33 °C yr
- Nong Bua Lam Phu29°C now · 29–36 °C yr
- Nong Khai29°C now · 29–36 °C yr
- Nonthaburi32°C now · 32–36 °C yr
- Pathum Thani32°C now · 32–36 °C yr
- Pattani29°C now · 29–33 °C yr
- Phang Nga30°C now · 29–33 °C yr
- Phatthalung29°C now · 29–33 °C yr
- Phayao29°C now · 29–36 °C yr
- Phetchabun30°C now · 30–35 °C yr
- Phetchaburi29°C now · 29–33 °C yr
- Phichit32°C now · 32–38 °C yr
- Phitsanulok30°C now · 30–36 °C yr
- Phra Nakhon Si Ayutthaya32°C now · 32–37 °C yr
- Phrae30°C now · 30–36 °C yr
- Phuket28°C now · 28–29 °C yr
- Prachin Buri30°C now · 30–35 °C yr
- Prachuap Khiri Khan29°C now · 29–33 °C yr
- Ranong30°C now · 29–33 °C yr
- Ratchaburi29°C now · 29–35 °C yr
- Rayong31°C now · 31–33 °C yr
- Roi Et30°C now · 30–36 °C yr
- Sa Kaeo31°C now · 31–35 °C yr
- Sakon Nakhon29°C now · 29–35 °C yr
- Samut Prakan31°C now · 31–34 °C yr
- Samut Sakhon30°C now · 30–33 °C yr
- Samut Songkhram30°C now · 30–34 °C yr
- Saraburi31°C now · 31–36 °C yr
- Satun29°C now · 29–33 °C yr
- Si Sa Ket30°C now · 30–36 °C yr
- Sing Buri32°C now · 32–38 °C yr
- Songkhla30°C now · 30–34 °C yr
- Sukhothai31°C now · 31–38 °C yr
- Suphan Buri31°C now · 31–37 °C yr
- Surat Thani30°C now · 30–34 °C yr
- Surin30°C now · 30–36 °C yr
- Tak28°C now · 28–34 °C yr
- Trang30°C now · 30–34 °C yr
- Trat30°C now · 29–32 °C yr
- Ubon Ratchathani30°C now · 30–36 °C yr
- Udon Thani29°C now · 29–36 °C yr
- Uthai Thani28°C now · 28–35 °C yr
- Uttaradit30°C now · 30–36 °C yr
- Yala29°C now · 29–33 °C yr
- Yasothon30°C now · 30–36 °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.
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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Sea surface temperature
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