Best time to visit Railay: January and February are driest, October wettest. Temperatures, rain and crowds month by month for Railay and Ao Nang.
For Railay and Ao Nang the short answer is December to February: the driest months, and the middle of the high season. The longer answer depends on what you value, because the same weather that makes January easy also makes it the priciest time to sleep on Railay.
The table uses climate data for Krabi and Wikivoyage's season dates, so nothing on this page is a guess.
Tap or hover a month. Colour shows how good it is for a trip, bar height shows how much it rains.
Bar height = average monthly rainfall. Crowds and prices: Quiet and cheaper · In between · Busiest and priciest
One of the two driest months. High season: busiest and priciest.
What is open and when
High season: busiest and priciest (roughly November to April)
Ferries between Ko Lanta, Ko Phi Phi and Phuket Town more frequent (November to May)
Temperatures and rainfall: Krabi climate data 1981 to 2010 as shown on Wikipedia (mean daily maximum and minimum, average monthly rainfall and rainy days). High and low season: Wikivoyage's Ao Nang page (high season roughly 1 November to 30 April). Levels follow the driest to wettest months in the data.
Wikipedia: Krabi (climate data 1981-2010) · Wikivoyage: Ao Nang (high and low season)
| Month | Weather | Crowds and prices |
|---|---|---|
| January | Highs 32.9 °C, lows 21.6 °C. About 32 mm of rain over 5.3 days. One of the two driest months. | High season: busiest and priciest |
| February | Highs 34.2 °C, lows 22.0 °C. About 43.4 mm of rain over 4.5 days. The driest with January, and the temperatures start to climb. | High season: busiest and priciest |
| March | Highs 34.3 °C, lows 23.0 °C. About 98.3 mm of rain over 8.7 days. The hottest month in the table. | High season: busiest and priciest |
| April | Highs 34.1 °C, lows 23.6 °C. About 147.2 mm of rain over 11.7 days. Hot, with the rain returning. | High season: busiest and priciest |
| May | Highs 32.9 °C, lows 23.7 °C. About 171.6 mm of rain over 15.9 days. The rains set in. | Low season: fewer visitors, some places close |
| June | Highs 31.9 °C, lows 23.3 °C. About 192.7 mm of rain over 15.8 days. Wet. | Low season: fewer visitors, some places close |
| July | Highs 31.5 °C, lows 23.0 °C. About 201.1 mm of rain over 18.3 days. Wet. | Low season: fewer visitors, some places close |
| August | Highs 31.4 °C, lows 22.9 °C. About 266.3 mm of rain over 18.0 days. Wet. | Low season: fewer visitors, some places close |
| September | Highs 31.2 °C, lows 22.9 °C. About 275.2 mm of rain over 18.5 days. Among the wettest months. | Low season: fewer visitors, some places close |
| October | Highs 31.3 °C, lows 22.4 °C. About 323.5 mm of rain over 21.5 days. The wettest month: 323.5 mm over 21.5 rainy days. | Low season: fewer visitors, some places close |
| November | Highs 31.1 °C, lows 22.5 °C. About 179.7 mm of rain over 17.6 days. Rain eases and the high season begins. | High season: busiest and priciest |
| December | Highs 31.4 °C, lows 21.7 °C. About 67.8 mm of rain over 10.1 days. Drier again, and popular. | High season: busiest and priciest |
Weather: Krabi climate data, 1981 to 2010, as shown on Wikipedia (mean daily maximum and minimum, average monthly rainfall and rainy days). Crowds: Wikivoyage's Ao Nang page defines high season as roughly 1 November to 30 April and low season as May to October.
Wikipedia describes Krabi's climate as tropical monsoon, with a ten-month rainy season between March and December. Within that, the pattern is clear: January (32 mm over 5.3 days) and February (43.4 mm over 4.5 days) are the driest months, October is the wettest at 323.5 mm over 21.5 rainy days, and September and August are not far behind.
Temperatures barely change. Mean daily highs stay between 31.1 °C and 34.3 °C all year, and lows between 21.6 °C and 23.7 °C, so the difference between months is rain, not heat. March is the hottest month in the table. For the same question across the whole country, see Thailand Voyager's guide to when to go.
Wikivoyage puts high season at roughly 1 November to 30 April, when it is driest and busiest. Its Railay page says prices typically double in that window, and its Ao Nang page gives an example of a 600 baht low-season room costing 1,600 baht in high season.
From May to October it is low season: prices fall and, according to Wikivoyage's Ao Nang page, many places close. Wikivoyage also notes that the ferries between Ko Lanta, Ko Phi Phi and Phuket Town are more frequent in the November to May dry season. If you travel in low season, check that your hotel and the tours you want are running.
| If you want | Aim for | Why |
|---|---|---|
| Dry weather and swimming | December to February | The driest months in the climate data, with January and February lowest |
| The lowest room prices | May to October | Low season, though it is wet and some places close |
| Rock climbing | The dry winter months | Wikivoyage calls Railay perhaps the best winter sport climbing area in the world |
| Island trips and ferries | November to May | Ferries between Ko Lanta, Phi Phi and Phuket Town are more frequent |
| A balance of weather and price | December | Rain drops to about 68 mm, but high-season prices apply |
US Google searches for "railay beach" stay between roughly 10,000 and 18,000 a month all year, peaking in December at about 18,100 and dipping to about 9,900 in July (DataForSEO, 12 months to August 2026). Interest is steady rather than seasonal, which fits a destination that visitors plan around the weather, not around holidays.
Top pickFrom US$37Best for: First-timers who want the classic Krabi day out
See prices & availability
Rock climbingFrom US$48Best for: Beginners who want to try climbing in its best-known setting
See prices & availability
Cooking classFrom US$54Best for: A rainy or hot-afternoon activity on Railay
See prices & availabilityNot sure where to start? Plan my trip →
December, January or February. January (32 mm of rain over 5.3 days) and February (43.4 mm over 4.5 days) are the driest months in Krabi's climate data, and this is the middle of the high season.
Plan your daysIt is the wettest time: September averages 275.2 mm of rain over 18.5 days and October 323.5 mm over 21.5 days. Prices are lowest, but many places close, so check your hotel and tours are running.
Browse island toursRoughly 1 November to 30 April, according to Wikivoyage. Railay prices typically double in that window.
Compare areas and pricesYes. Mean daily highs stay between 31.1 °C and 34.3 °C all year in the climate data, with March the hottest month.
Read the Railay travel guideSources: Wikivoyage (Railay, Ao Nang), Wikipedia (Railay Beach, Krabi), and the Trip.com and GetYourGuide pages read on 20 September 2026. Fares and prices change, so check them before you travel.
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