Thailand (Khao Lak)
Thailand · Asia
The best time to visit Thailand (Khao Lak) is January, February, and December. In summer, temperatures rise to 33°C; in winter they can drop to 23°C. All climate data are based on historical monthly averages (2005–2025) to help you plan the optimal travel time.
Thailand (Khao Lak) – What you should know
Khao Lak sits on the Andaman coast and has one of Thailand's most pronounced monsoons. September brings around 700 mm of rain across twenty days, and every month from May to October exceeds 480 mm. Against that stand January at 70 mm and February at 50 mm — the same stretch of coast at both extremes.
The travel season is correspondingly clear: November to March. Highs then sit at 31–33°C, the Andaman Sea at 28–30°C, and the sun shines seven to eight hours a day. By September that falls to 4.2 hours. Many hotels and dive operators close entirely during the rainy season, which sharply limits the choice out of season.
The main reason for the seasonality lies underwater: the Similan Islands, one of Southeast Asia's finest dive areas, open as a national park from roughly mid-October to mid-May each year and close for the rest. Anyone coming for the Similans is therefore working to an administrative window rather than a weather one — and should check the current dates before booking.
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MAXMAX | 32° | 33° | 34° | 33° | 32° | 32° | 31° | 31° | 31° | 31° | 32° | 32° |
MINMIN | 24° | 24° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 24° | 24° | 24° |
☀️Sunshine | 8h UV 8 | 9h UV 9 | 9h UV 9 | 8h UV 9 | 6h UV 8 | 6h UV 7 | 5h UV 7 | 6h UV 7 | 5h UV 7 | 5h UV 7 | 6h UV 7 | 7h UV 7 |
🌊Water Temp | 29° | 30° | 31° | 32° | 31° | 30° | 30° | 30° | 30° | 30° | 30° | 29° |
🌧Rain Days | 5d70mm | 3d50mm | 7d144mm | 11d215mm | 19d520mm | 17d480mm | 17d528mm | 19d532mm | 20d700mm | 19d533mm | 14d222mm | 6d89mm |
Best travel timeMonthly averages 2005–2025 · Source: ERA5 + station data
Travel Tips
From February to April, UV levels in Thailand (Khao Lak) reach 9 — very high on the WHO scale. High-SPF sunscreen and shade around midday are essential.
March offers great weather in Thailand (Khao Lak) with fewer tourists and lower prices — ideal for those who want to avoid the peak season crowds.
Frequently Asked Questions
- When is the best time to visit Thailand (Khao Lak)?
- The best time to visit Thailand (Khao Lak) is January, February, and December. These months offer the most favourable combination of sunshine, temperatures, and low rainfall.
- How warm does it get in Thailand (Khao Lak)?
- In summer, temperatures in Thailand (Khao Lak) can reach up to 33°C. In winter, they may drop to 23°C.
- How much rain does Thailand (Khao Lak) get?
- Thailand (Khao Lak) has a relatively even rainfall pattern with an average of 13 rain days per month. The driest months are January, February, and December.
- How warm is the water in Thailand (Khao Lak)?
- Water temperature in Thailand (Khao Lak) ranges from 28°C (January) to 31°C (April). During the best travel months (January, February, and December), the water is most pleasant for swimming.
Best Travel Time by Vacation Type
🏖️
Beach Holiday
Warm, sunny, little rain
JanFebDec
🏙️
City Trip
Pleasantly mild, not too hot
JanFebDec
