Thailand (Koh Chang) · May
Low seasonThailand · Asia
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 32° (90°)28– (82–)34 (93) | 32° (90°)28– (82–)34 (93) | 32° (90°)29– (84–)34 (93) | 33° (91°)30– (86–)35 (95) | 32° (90°)28– (82–)34 (93) | 31° (88°)27– (81–)33 (91) | 31° (88°)27– (81–)32 (90) | 31° (88°)28– (82–)32 (90) | 31° (88°)27– (81–)33 (91) | 32° (90°)28– (82–)34 (93) | 33° (91°)29– (84–)34 (93) | 32° (90°)27– (81–)35 (95) |
Ø night, range from coldest to warmest nightØ nightrange | 23° (73°)18– (64–)25 (77) | 24° (75°)21– (70–)25 (77) | 25° (77°)22– (72–)26 (79) | 26° (79°)23– (73–)27 (81) | 26° (79°)24– (75–)27 (81) | 26° (79°)24– (75–)27 (81) | 26° (79°)23– (73–)27 (81) | 26° (79°)23– (73–)27 (81) | 25° (77°)23– (73–)26 (79) | 25° (77°)23– (73–)26 (79) | 25° (77°)21– (70–)26 (79) | 23° (73°)18– (64–)25 (77) |
☀️Sunshine | 9h UV 8 | 9h UV 9 | 9h UV 9 | 9h UV 9 | 7h UV 8 | 5h UV 7 | 5h UV 7 | 5h UV 7 | 5h UV 7 | 6h UV 7 | 8h UV 8 | 8h UV 8 |
🌊Water Temp | 28° (82°) | 29° (84°) | 30° (86°) | 31° (88°) | 31° (88°) | 31° (88°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 28° (82°) |
🌧Rain Days | 4d38mm (1.5") | 4d65mm (2.6") | 9d125mm (4.9") | 13d171mm (6.7") | 22d412mm (16.2") | 24d592mm (23.3") | 26d766mm (30.2") | 24d548mm (21.6") | 25d744mm (29.3") | 20d368mm (14.5") | 8d93mm (3.6") | 2d16mm (0.6") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Off-season — lowest travel prices with still acceptable climate.
May in Thailand (Koh Chang) is generally manageable, but with 22 rain days it's not a reliably sunny month. Better conditions can be found in January, February, November, and December.
Daytime highs reach 32°C (90°F) with a daily average of 29°C (84°F) — nights stay warm at 26°C (79°F). Peaks reach around 34°C (93°F), the coldest nights around 24°C (75°F). The sun shines an average of 7 hours per day; there are 22 rain days with 412 mm (16.2 in) total. The water is a warm 31°C (88°F) — perfect for snorkelling and swimming.
An umbrella or waterproof jacket is essential. On rainy days, plan indoor activities like museums and markets.
The monsoon season: it rains on most days, often for hours, and the sun rarely shows itself. The jungle is steamy green and the waterfalls thunder, but the sea is rough and boat trips are often cancelled. Many resorts and restaurants close, and the island belongs to the rain.
Packing list for Thailand (Koh Chang) in May
- Light summer clothes
- Swimwear and beach towel
- Sunscreen
- Sunglasses
- Rain jacket and waterproof shoes
- Insect repellent
- Travel first-aid kit
Frequently Asked Questions
- Is May a good time to visit Thailand (Koh Chang)?
- May is not an optimal month for Thailand (Koh Chang) (Score: 60/100), but it is manageable. For better conditions, consider January, February, November, and December.
- How warm is it in Thailand (Koh Chang) in May?
- In May, Thailand (Koh Chang) sees daily highs of 32°C (90°F). Nights cool to 26°C (79°F), with a daily average of 29°C (84°F). Peaks reach around 34°C (93°F), the coldest nights around 24°C (75°F).
- How much rain falls in Thailand (Koh Chang) in May?
- In May, Thailand (Koh Chang) receives an average of 412 mm (16.2 in) of rain over 22 rain days. With frequent rain days, waterproof clothing is recommended.
- How many sunshine hours does Thailand (Koh Chang) get in May?
- Thailand (Koh Chang) averages 7 sunshine hours per day in May — close to the annual average.
- How warm is the water in Thailand (Koh Chang) in May?
- Water temperature in Thailand (Koh Chang) in May averages 31°C (88°F) — ideal for swimming and snorkelling.
