How this planner works
Every month page shows the average monthly rain for each beach and island region and our score: good, fair or not recommended. Below that you find beaches, islands, festivals, temples, birds and hotels that suit that month, with links to their pages on this site.
The rain figures are averages and the weather varies from year to year. Festivals that follow the lunar calendar can fall in a different month in another year; this is noted where it applies.
Pick your month
12 good (12 regions)
Thailand in January: rain per region, best beaches, islands, festivals and temples. All 12 regions score 'good' on rainfall.
12 good (12 regions)
Thailand in February: rain per region, best beaches, islands, festivals and temples. All 12 regions score 'good' on rainfall.
12 good (12 regions)
Thailand in March: rain per region, best beaches, islands, festivals and temples. All 12 regions score 'good' on rainfall.
9 good · 3 fair (12 regions)
Thailand in April: rain per region, best beaches, islands, festivals and temples. Good weather: Similan, Phuket, Koh Samui, Chumphon, Hua Hin, Pattaya.
1 good · 7 fair · 4 not recommended (12 regions)
Thailand in May: rain per region, best beaches, islands, festivals and temples. Good weather: Koh Samui.
1 good · 7 fair · 4 not recommended (12 regions)
Thailand in June: rain per region, best beaches, islands, festivals and temples. Good weather: Koh Samui.
1 good · 7 fair · 4 not recommended (12 regions)
Thailand in July: rain per region, best beaches, islands, festivals and temples. Good weather: Koh Samui.
1 good · 7 fair · 4 not recommended (12 regions)
Thailand in August: rain per region, best beaches, islands, festivals and temples. Good weather: Koh Samui.
1 good · 4 fair · 7 not recommended (12 regions)
Thailand in September: rain per region, best beaches, islands, festivals and temples. Good weather: Koh Samui.
7 fair · 5 not recommended (12 regions)
Thailand in October: rain per region, best beaches, islands, festivals and temples.
7 good · 4 fair · 1 not recommended (12 regions)
Thailand in November: rain per region, best beaches, islands, festivals and temples. Good weather: Ranong, Hua Hin, Pattaya, Rayong, Chanthaburi, Trat.
10 good · 2 fair (12 regions)
Thailand in December: rain per region, best beaches, islands, festivals and temples. Good weather: Similan, Phuket, Ranong, Trang, Hua Hin, Pattaya.
The whole year by region
Each cell is the score of that region in that month (based on average rainfall). Click a month for the figures.
- Good
- Fair
- Not recommended
| Region | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Andaman Sea: Similan, Surin and Koh Rok (marine parks) | January: Good, Phuket (Mueang) 30 mm☀ | February: Good, Phuket (Mueang) 24 mm☀ | March: Good, Phuket (Mueang) 74 mm☀ | April: Good, Phuket (Mueang) 143 mm☀ | May: Not recommended, Phuket (Mueang) 260 mm☔ | June: Not recommended, Phuket (Mueang) 213 mm☔ | July: Not recommended, Phuket (Mueang) 258 mm☔ | August: Not recommended, Phuket (Mueang) 287 mm☔ | September: Not recommended, Phuket (Mueang) 361 mm☔ | October: Not recommended, Phuket (Mueang) 320 mm☔ | November: Fair, Phuket (Mueang) 177 mm⛅ | December: Good, Phuket (Mueang) 72 mm☀ |
| Andaman Sea: Phuket, Phang Nga, Krabi | January: Good, Phuket (Mueang) 30 mm, Krabi 32 mm☀ | February: Good, Phuket (Mueang) 24 mm, Krabi 43 mm☀ | March: Good, Phuket (Mueang) 74 mm, Krabi 98 mm☀ | April: Good, Phuket (Mueang) 143 mm, Krabi 147 mm☀ | May: Fair, Phuket (Mueang) 260 mm, Krabi 172 mm⛅ | June: Fair, Phuket (Mueang) 213 mm, Krabi 193 mm⛅ | July: Fair, Phuket (Mueang) 258 mm, Krabi 201 mm⛅ | August: Fair, Phuket (Mueang) 287 mm, Krabi 266 mm⛅ | September: Not recommended, Phuket (Mueang) 361 mm, Krabi 275 mm☔ | October: Not recommended, Phuket (Mueang) 320 mm, Krabi 324 mm☔ | November: Fair, Phuket (Mueang) 177 mm, Krabi 180 mm⛅ | December: Good, Phuket (Mueang) 72 mm, Krabi 68 mm☀ |
| Andaman Sea: Ranong (Koh Phayam) | January: Good, Ranong 41 mm☀ | February: Good, Ranong 20 mm☀ | March: Good, Ranong 78 mm☀ | April: Fair, Ranong 154 mm⛅ | May: Not recommended, Ranong 486 mm☔ | June: Not recommended, Ranong 638 mm☔ | July: Not recommended, Ranong 706 mm☔ | August: Not recommended, Ranong 772 mm☔ | September: Not recommended, Ranong 679 mm☔ | October: Not recommended, Ranong 421 mm☔ | November: Good, Ranong 130 mm☀ | December: Good, Ranong 58 mm☀ |
| Southern Andaman: Trang and Satun (Koh Lipe) | January: Good, Satun 44 mm☀ | February: Good, Satun 41 mm☀ | March: Good, Satun 134 mm☀ | April: Fair, Satun 210 mm⛅ | May: Fair, Satun 229 mm⛅ | June: Fair, Satun 190 mm⛅ | July: Fair, Satun 230 mm⛅ | August: Fair, Satun 278 mm⛅ | September: Not recommended, Satun 334 mm☔ | October: Not recommended, Satun 344 mm☔ | November: Fair, Satun 218 mm⛅ | December: Good, Satun 118 mm☀ |
| Gulf: Koh Samui, Koh Phangan, Koh Tao | January: Good, Ko Samui 127 mm☀ | February: Good, Ko Samui 64 mm☀ | March: Good, Ko Samui 116 mm☀ | April: Good, Ko Samui 83 mm☀ | May: Good, Ko Samui 132 mm☀ | June: Good, Ko Samui 134 mm☀ | July: Good, Ko Samui 117 mm☀ | August: Good, Ko Samui 102 mm☀ | September: Good, Ko Samui 118 mm☀ | October: Fair, Ko Samui 295 mm⛅ | November: Not recommended, Ko Samui 445 mm☔ | December: Fair, Ko Samui 263 mm⛅ |
| Gulf: Chumphon | January: Good, Chumphon 97 mm☀ | February: Good, Chumphon 52 mm☀ | March: Good, Chumphon 110 mm☀ | April: Good, Chumphon 93 mm☀ | May: Fair, Chumphon 171 mm⛅ | June: Fair, Chumphon 163 mm⛅ | July: Fair, Chumphon 195 mm⛅ | August: Fair, Chumphon 199 mm⛅ | September: Fair, Chumphon 179 mm⛅ | October: Fair, Chumphon 247 mm⛅ | November: Fair, Chumphon 259 mm⛅ | December: Fair, Chumphon 173 mm⛅ |
| Upper Gulf west: Hua Hin, Cha-am, Prachuap Khiri Khan | January: Good, Hua Hin 25 mm, Prachuap Khiri Khan 45 mm☀ | February: Good, Hua Hin 14 mm, Prachuap Khiri Khan 21 mm☀ | March: Good, Hua Hin 50 mm, Prachuap Khiri Khan 77 mm☀ | April: Good, Hua Hin 46 mm, Prachuap Khiri Khan 57 mm☀ | May: Fair, Hua Hin 96 mm, Prachuap Khiri Khan 114 mm⛅ | June: Fair, Hua Hin 82 mm, Prachuap Khiri Khan 93 mm⛅ | July: Fair, Hua Hin 90 mm, Prachuap Khiri Khan 118 mm⛅ | August: Fair, Hua Hin 67 mm, Prachuap Khiri Khan 99 mm⛅ | September: Fair, Hua Hin 130 mm, Prachuap Khiri Khan 104 mm⛅ | October: Fair, Hua Hin 250 mm, Prachuap Khiri Khan 233 mm⛅ | November: Good, Hua Hin 73 mm, Prachuap Khiri Khan 128 mm☀ | December: Good, Hua Hin 12 mm, Prachuap Khiri Khan 24 mm☀ |
| East coast: Pattaya, Bang Saen, Koh Larn (Chonburi) | January: Good, Pattaya 16 mm, Chonburi 18 mm, Sattahip 32 mm☀ | February: Good, Pattaya 20 mm, Chonburi 15 mm, Sattahip 22 mm☀ | March: Good, Pattaya 47 mm, Chonburi 56 mm, Sattahip 58 mm☀ | April: Good, Pattaya 68 mm, Chonburi 80 mm, Sattahip 91 mm☀ | May: Fair, Pattaya 121 mm, Chonburi 156 mm, Sattahip 159 mm⛅ | June: Fair, Pattaya 132 mm, Chonburi 143 mm, Sattahip 157 mm⛅ | July: Fair, Pattaya 104 mm, Chonburi 144 mm, Sattahip 112 mm⛅ | August: Fair, Pattaya 91 mm, Chonburi 160 mm, Sattahip 95 mm⛅ | September: Fair, Pattaya 214 mm, Chonburi 280 mm, Sattahip 244 mm⛅ | October: Fair, Pattaya 224 mm, Chonburi 197 mm, Sattahip 286 mm⛅ | November: Good, Pattaya 57 mm, Chonburi 37 mm, Sattahip 72 mm☀ | December: Good, Pattaya 12 mm, Chonburi 7 mm, Sattahip 13 mm☀ |
| East coast: Rayong, Koh Samet, Koh Man | January: Good, Rayong 29 mm☀ | February: Good, Rayong 32 mm☀ | March: Good, Rayong 70 mm☀ | April: Good, Rayong 85 mm☀ | May: Fair, Rayong 190 mm⛅ | June: Fair, Rayong 178 mm⛅ | July: Fair, Rayong 176 mm⛅ | August: Fair, Rayong 128 mm⛅ | September: Fair, Rayong 269 mm⛅ | October: Fair, Rayong 196 mm⛅ | November: Good, Rayong 44 mm☀ | December: Good, Rayong 8 mm☀ |
| East coast: Chanthaburi | January: Good, Chanthaburi 28 mm☀ | February: Good, Chanthaburi 36 mm☀ | March: Good, Chanthaburi 84 mm☀ | April: Good, Chanthaburi 128 mm☀ | May: Not recommended, Chanthaburi 372 mm☔ | June: Not recommended, Chanthaburi 500 mm☔ | July: Not recommended, Chanthaburi 511 mm☔ | August: Not recommended, Chanthaburi 456 mm☔ | September: Not recommended, Chanthaburi 538 mm☔ | October: Fair, Chanthaburi 272 mm⛅ | November: Good, Chanthaburi 57 mm☀ | December: Good, Chanthaburi 8 mm☀ |
| East coast: Trat, Koh Chang, Koh Kood, Koh Mak | January: Good, Trat 51 mm☀ | February: Good, Trat 82 mm☀ | March: Good, Trat 140 mm☀ | April: Fair, Trat 196 mm⛅ | May: Not recommended, Trat 420 mm☔ | June: Not recommended, Trat 777 mm☔ | July: Not recommended, Trat 1024 mm☔ | August: Not recommended, Trat 970 mm☔ | September: Not recommended, Trat 816 mm☔ | October: Not recommended, Trat 338 mm☔ | November: Good, Trat 85 mm☀ | December: Good, Trat 28 mm☀ |
| Central: Koh Kret (Nonthaburi) | January: Good, Bangkok 24 mm☀ | February: Good, Bangkok 21 mm☀ | March: Good, Bangkok 51 mm☀ | April: Good, Bangkok 93 mm☀ | May: Fair, Bangkok 217 mm⛅ | June: Fair, Bangkok 198 mm⛅ | July: Fair, Bangkok 190 mm⛅ | August: Fair, Bangkok 227 mm⛅ | September: Not recommended, Bangkok 336 mm☔ | October: Fair, Bangkok 289 mm⛅ | November: Good, Bangkok 45 mm☀ | December: Good, Bangkok 12 mm☀ |
Sources of the weather figures
The rain figures and season texts per region come from these sources (each month page lists them per region):
Show sources (28)
- en.sme.go.th http://en.sme.go.th/en/page.php?modulekey=384
- www1.ldd.go.th http://www1.ldd.go.th/ldd_en/en-US/rainfall/
- en.wikipedia.org https://en.wikipedia.org/wiki/Bangkok
- en.wikipedia.org https://en.wikipedia.org/wiki/Chanthaburi
- en.wikipedia.org https://en.wikipedia.org/wiki/Chonburi
- en.wikipedia.org https://en.wikipedia.org/wiki/Chumphon
- en.wikipedia.org https://en.wikipedia.org/wiki/Hua_Hin_District
- en.wikipedia.org https://en.wikipedia.org/wiki/Ko_Samui
- en.wikipedia.org https://en.wikipedia.org/wiki/Krabi
- en.wikipedia.org https://en.wikipedia.org/wiki/Pattaya
- en.wikipedia.org https://en.wikipedia.org/wiki/Phuket_province
- en.wikipedia.org https://en.wikipedia.org/wiki/Prachuap_Khiri_Khan
- en.wikipedia.org https://en.wikipedia.org/wiki/Ranong
- en.wikipedia.org https://en.wikipedia.org/wiki/Rayong
- en.wikipedia.org https://en.wikipedia.org/wiki/Sattahip
- en.wikipedia.org https://en.wikipedia.org/wiki/Satun
- en.wikipedia.org https://en.wikipedia.org/wiki/Trat
- samuijourney.com https://samuijourney.com/explore/ang-thong-closed-alternatives/
- warning.dmcr.go.th https://warning.dmcr.go.th/th/knowledge/detail/19638
- asiantrails.travel https://www.asiantrails.travel/latest-news/annual-closure-of-iconic-island-bay/
- nationthailand.com https://www.nationthailand.com/news/tourism/40038013
- nationthailand.com https://www.nationthailand.com/news/tourism/40066673
- pattayamail.com https://www.pattayamail.com/thailandnews/samui-tao-ferry-services-halted-as-rough-seas-disrupt-travel-for-hundreds-526765
- ploysiamspeedboat.com https://www.ploysiamspeedboat.com/travel-information/
- siamtourandrealty.com https://www.siamtourandrealty.com/thailand-island-closures-2026-2027/
- tatnews.org https://www.tatnews.org/2018/07/important-information-on-marine-tourism-in-thailand-during-the-southwest-monsoon-season/
- thainationalparks.com https://www.thainationalparks.com/tarutao-national-marine-park/get-there
- visit-thailand.org https://www.visit-thailand.org/islands/eastern-islands