Weather in Thailand for May 2025
In general, the average temperature in Thailand at the beginning of May is 38.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 35.7 °C by the end of May.
Expect significant rainfall in Thailand during May, with an average of 16 rainy days.
Is May a good time to visit Thailand? check out the best time to travel to Thailand page.
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Thailand in May average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  38° | 2  37° | 3 37° | 4  38° | |||
| 5 40° | 6  39° | 7  39° | 8 38° | 9 35° | 10 36° | 11 36° |
| 12 37° | 13 38° | 14 35° | 15 36° | 16 38° | 17  38° | 18 37° |
| 19 39° | 20 39° | 21 37° | 22 35° | 23 32° | 24  32° | 25 34° |
| 26 36° | 27 37° | 28 37° | 29 35° | 30 36° | 31 35° |
You can click on date
Temperatures trend during May in Thailand
May weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate or heavy rain shower | 38° /28° | 3 mm | 9 | |
| 2 May | Patchy rain possible | 37° /29° | 0.3 mm | 9 | |
| 3 May | Patchy rain possible | 37° /29° | 0.1 mm | 9 | |
| 4 May | Partly cloudy | 38° /29° | 0 mm | 9 | |
| 5 May | Patchy rain possible | 40° /30° | 0.1 mm | 9 | |
| 6 May | Overcast | 39° /29° | 0 mm | 9 | |
| 7 May | Sunny | 39° /30° | 0 mm | 9 | |
| 8 May | Sunny | 38° /30° | 3.7 mm | 9 | |
| 9 May | Moderate or heavy rain shower | 35° /28° | 9.1 mm | 8 | |
| 10 May | Moderate or heavy rain shower | 36° /28° | 7.8 mm | 8 | |
| 11 May | Moderate or heavy rain shower | 36° /29° | 7.4 mm | 8 | |
| 12 May | Moderate rain at times | 37° /29° | 1.8 mm | 9 | |
| 13 May | Patchy rain possible | 38° /29° | 1.9 mm | 8 | |
| 14 May | Patchy rain possible | 35° /28° | 3.3 mm | 8 | |
| 15 May | Patchy rain possible | 36° /28° | 2 mm | 8 | |
| 16 May | Partly cloudy | 38° /28° | 0 mm | 9 | |
| 17 May | Cloudy | 38° /28° | 2.2 mm | 9 | |
| 18 May | Partly cloudy | 37° /28° | 0 mm | 9 | |
| 19 May | Patchy rain possible | 39° /29° | 0.4 mm | 9 | |
| 20 May | Sunny | 39° /28° | 0 mm | 9 | |
| 21 May | Sunny | 37° /28° | 5.6 mm | 9 | |
| 22 May | Moderate or heavy rain shower | 35° /28° | 5.9 mm | 8 | |
| 23 May | Moderate or heavy rain shower | 32° /27° | 13 mm | 7 | |
| 24 May | Heavy rain at times | 32° /27° | 22.3 mm | 7 | |
| 25 May | Cloudy | 34° /27° | 5.1 mm | 8 | |
| 26 May | Patchy rain possible | 36° /27° | 2 mm | 8 | |
| 27 May | Moderate rain at times | 37° /28° | 0.3 mm | 8 | |
| 28 May | Moderate or heavy rain shower | 37° /27° | 7.9 mm | 9 | |
| 29 May | Moderate or heavy rain shower | 35° /27° | 8.9 mm | 8 | |
| 30 May | Moderate or heavy rain shower | 36° /27° | 5.7 mm | 8 | |
| 31 May | Patchy rain possible | 35° /28° | 0.3 mm | 8 | |
| Next | |||||
Guide for Thailand in May
In May, Thailand experiences a transition in weather from the beginning to the end of the month. At the start of May, the weather in Thailand is generally warm and humid, with temperatures ranging from 28° to 35° in the central and northern regions.
The southern part of the country, including popular tourist destinations like Phuket and Krabi, experiences similar temperatures, with occasional rainfall and high humidity.
As the month progresses, the weather in Thailand becomes hotter and more humid, with temperatures rising to 30° to 37° in the central and northern regions. The southern part of the country continues to experience warm temperatures, with occasional showers and high humidity levels.
Overall, May marks the beginning of the rainy season in Thailand, especially in the southern regions, where brief but heavy downpours are common. Travelers should be prepared for sudden rain showers and plan their activities accordingly.
Despite the increased rainfall, May still offers plenty of opportunities to explore Thailand's cultural and natural attractions, with lush green landscapes and fewer crowds compared to the peak tourist season.
Thailand in May - FAQ
What to pack to Thailand in May?
As you prepare for your trip to Thailand in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Thailand, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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