When to go to Railay
Nov–Mar is dry with calm seas and the best climbing. Dec–Jan is busiest. May–Oct is monsoon: boats may stop and many places close.
Railay weather by month
Average daily high, rainfall and conditions.
- Jan28°93 mm
- Feb29°25 mm
- Mar31°106 mm
- Apr31°130 mm
- May29°237 mm
- Jun29°259 mm
- Jul28°243 mm
- Aug28°277 mm
- Sep28°326 mm
- Oct28°317 mm
- Nov28°232 mm
- Dec28°139 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 28°C83°F | 24°C76°F | 93 mm | 85% | Pleasant |
| February | 29°C85°F | 24°C76°F | 25 mm | 81% | Pleasant |
| March | 31°C87°F | 25°C78°F | 106 mm | 78% | Pleasant |
| April | 31°C87°F | 27°C80°F | 130 mm | 80% | Pleasant |
| May | 29°C85°F | 27°C80°F | 237 mm | 84% | Rainy |
| June | 29°C84°F | 27°C80°F | 259 mm | 86% | Rainy |
| July | 28°C83°F | 26°C79°F | 243 mm | 86% | Rainy |
| August | 28°C83°F | 26°C79°F | 277 mm | 86% | Rainy |
| September | 28°C83°F | 26°C78°F | 326 mm | 87% | Very wet |
| October | 28°C83°F | 26°C78°F | 317 mm | 87% | Very wet |
| November | 28°C83°F | 25°C78°F | 232 mm | 87% | Rainy |
| December | 28°C83°F | 25°C76°F | 139 mm | 87% | Pleasant |
Best months across Thailand
| Place | Best months | Warmest month |
|---|---|---|
| Bangkok | Nov–Feb | Mar (36°C) |
| Phuket | Nov–Mar | Mar (30°C) |
| Chiang Mai | Nov–Jan | Apr (37°C) |
| Koh Samui | Jan–Apr, Jul–Aug | May (30°C) |
| Krabi | Nov–Mar | Mar (31°C) |
| Koh Phi Phi | Nov–Mar | Apr (30°C) |
| Koh Phangan | Jan–Apr, Jul–Aug | May (27°C) |
| Pai | Nov–Feb | Apr (35°C) |
| Pattaya | Nov–Feb | Apr (31°C) |
| Koh Tao | Feb–Aug | May (29°C) |
| Patong | Nov–Apr | Mar (30°C) |
| Hua Hin | Nov–Mar | Apr (33°C) |
| Chiang Rai | Nov–Feb | Apr (35°C) |
| Ayutthaya | Nov–Feb | Mar (37°C) |
| Koh Lanta | Nov–Apr | Apr (29°C) |
| Railay | Nov–Mar | Mar (31°C) |
| Kanchanaburi | Nov–Feb | Apr (37°C) |
| Koh Chang | Nov–Feb | Apr (30°C) |
| Khao Lak | Nov–Mar | Mar (31°C) |
| Koh Samet | Nov–Mar | Apr (30°C) |
| Koh Lipe | Nov–Mar | Apr (30°C) |
| Khao Yai | Nov–Feb | Apr (34°C) |
| Khao Sok | Dec–Apr | Apr (32°C) |
| Sukhothai | Nov–Feb | Apr (38°C) |
| Hat Yai | Jan–Apr | Apr (31°C) |
| Kata Beach | Nov–Mar | Mar (30°C) |
| Jomtien | Nov–Feb | Apr (31°C) |
| Rawai | Nov–Mar | Mar (30°C) |
| Udon Thani | Nov–Feb | Apr (37°C) |
| Koh Kood | Nov–Mar | May (30°C) |
Quick answers
What is the best month to visit Railay?
Nov–Mar. Nov–Mar is dry with calm seas and the best climbing. Dec–Jan is busiest. May–Oct is monsoon: boats may stop and many places close.
When is the rainy season in Railay?
Rain peaks in September with about 326 mm. Months with 150 mm or more: May–Nov.
What is the hottest month in Railay?
March, with average highs of 31°C (87°F).
How cold does Railay get?
The coolest nights are in January, averaging 24°C (76°F).
More about Railay
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.