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Thailand · Month guide
Thailand in May
Around 34 °C with 188 mm of rain and 5.9 hours of sun a day.
May is a mixed month for Thailand — worth planning around specific regions. Around 34 °C with 188 mm of rain and 5.9 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.
Avoid
Thailand · May
What the weather usually does
Thailand · typical month
- Day / night25 – 34 °CYear range 19 – 35 °C
- Rainfall188 mmYear range 23 – 284 mm
- Sunshine5.9 hr / dayYear range 3.6 – 8.2 hr / day
What’s open · May
Things to do in Thailand in May
Nothing is closed in May, but 1 thing below is weather-dependent.
- LimitedSimilan and Surin Islands
the closure starts and ends mid-month, so roughly half of each is shut - confirm the year's exact dates before booking
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 Charoen34°C now · 30–36 °C yr
- Ang Thong36°C now · 32–38 °C yr
- Bangkok34°C now · 31–35 °C yr
- Bueng Kan34°C now · 29–35 °C yr
- Buri Ram35°C now · 30–36 °C yr
- Chachoengsao34°C now · 31–35 °C yr
- Chai Nat37°C now · 31–38 °C yr
- Chaiyaphum33°C now · 29–34 °C yr
- Chanthaburi32°C now · 30–33 °C yr
- Chiang Mai32°C now · 27–34 °C yr
- Chiang Rai34°C now · 28–35 °C yr
- Chon Buri33°C now · 31–34 °C yr
- Chumphon32°C now · 29–33 °C yr
- Kalasin34°C now · 30–36 °C yr
- Kamphaeng Phet35°C now · 30–36 °C yr
- Kanchanaburi33°C now · 29–35 °C yr
- Khon Kaen35°C now · 30–36 °C yr
- Krabi32°C now · 30–34 °C yr
- Lampang34°C now · 29–36 °C yr
- Lamphun34°C now · 29–36 °C yr
- Loei33°C now · 28–34 °C yr
- Lopburi35°C now · 31–37 °C yr
- Mae Hong Son32°C now · 28–35 °C yr
- Maha Sarakham35°C now · 30–36 °C yr
- Mukdahan34°C now · 29–35 °C yr
- Nakhon Nayok34°C now · 31–35 °C yr
- Nakhon Pathom35°C now · 32–36 °C yr
- Nakhon Phanom34°C now · 29–35 °C yr
- Nakhon Ratchasima34°C now · 29–35 °C yr
- Nakhon Sawan36°C now · 31–38 °C yr
- Nakhon Si Thammarat33°C now · 30–34 °C yr
- Nan33°C now · 29–35 °C yr
- Narathiwat33°C now · 28–33 °C yr
- Nong Bua Lam Phu34°C now · 29–36 °C yr
- Nong Khai34°C now · 29–36 °C yr
- Nonthaburi35°C now · 32–36 °C yr
- Pathum Thani35°C now · 32–36 °C yr
- Pattani33°C now · 29–33 °C yr
- Phang Nga31°C now · 29–33 °C yr
- Phatthalung33°C now · 29–33 °C yr
- Phayao34°C now · 29–36 °C yr
- Phetchabun33°C now · 30–35 °C yr
- Phetchaburi32°C now · 29–33 °C yr
- Phichit36°C now · 32–38 °C yr
- Phitsanulok34°C now · 30–36 °C yr
- Phra Nakhon Si Ayutthaya36°C now · 32–37 °C yr
- Phrae35°C now · 30–36 °C yr
- Phuket29°C now · 28–29 °C yr
- Prachin Buri33°C now · 30–35 °C yr
- Prachuap Khiri Khan32°C now · 29–33 °C yr
- Ranong32°C now · 29–33 °C yr
- Ratchaburi34°C now · 29–35 °C yr
- Rayong32°C now · 31–33 °C yr
- Roi Et35°C now · 30–36 °C yr
- Sa Kaeo34°C now · 31–35 °C yr
- Sakon Nakhon34°C now · 29–35 °C yr
- Samut Prakan33°C now · 31–34 °C yr
- Samut Sakhon33°C now · 30–33 °C yr
- Samut Songkhram34°C now · 30–34 °C yr
- Saraburi35°C now · 31–36 °C yr
- Satun31°C now · 29–33 °C yr
- Si Sa Ket34°C now · 30–36 °C yr
- Sing Buri36°C now · 32–38 °C yr
- Songkhla33°C now · 30–34 °C yr
- Sukhothai36°C now · 31–38 °C yr
- Suphan Buri36°C now · 31–37 °C yr
- Surat Thani33°C now · 30–34 °C yr
- Surin34°C now · 30–36 °C yr
- Tak32°C now · 28–34 °C yr
- Trang32°C now · 30–34 °C yr
- Trat31°C now · 29–32 °C yr
- Ubon Ratchathani34°C now · 30–36 °C yr
- Udon Thani34°C now · 29–36 °C yr
- Uthai Thani34°C now · 28–35 °C yr
- Uttaradit34°C now · 30–36 °C yr
- Yala33°C now · 29–33 °C yr
- Yasothon34°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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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
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Humidity
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