Thailand (Koh Samui) · June
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 | 31° (88°)27– (81–)32 (90) | 31° (88°)29– (84–)32 (90) | 32° (90°)29– (84–)34 (93) | 33° (91°)29– (84–)35 (95) | 34° (93°)31– (88–)35 (95) | 33° (91°)30– (86–)35 (95) | 33° (91°)30– (86–)34 (93) | 33° (91°)30– (86–)34 (93) | 33° (91°)29– (84–)34 (93) | 32° (90°)28– (82–)34 (93) | 31° (88°)27– (81–)33 (91) | 31° (88°)27– (81–)33 (91) |
Ø night, range from coldest to warmest nightØ nightrange | 26° (79°)22– (72–)27 (81) | 26° (79°)23– (73–)27 (81) | 27° (81°)24– (75–)28 (82) | 27° (81°)24– (75–)29 (84) | 27° (81°)24– (75–)28 (82) | 27° (81°)24– (75–)28 (82) | 27° (81°)24– (75–)28 (82) | 27° (81°)24– (75–)28 (82) | 27° (81°)24– (75–)27 (81) | 26° (79°)24– (75–)27 (81) | 26° (79°)24– (75–)27 (81) | 26° (79°)23– (73–)27 (81) |
☀️Sunshine | 8h UV 8 | 9h UV 9 | 10h UV 9 | 9h UV 9 | 8h UV 9 | 8h UV 8 | 7h UV 8 | 8h UV 8 | 6h UV 8 | 6h UV 7 | 6h UV 7 | 7h UV 7 |
🌊Water Temp | 28° (82°) | 29° (84°) | 30° (86°) | 31° (88°) | 31° (88°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 30° (86°) | 29° (84°) | 28° (82°) |
🌧Rain Days | 8d154mm (6.1") | 4d66mm (2.6") | 4d112mm (4.4") | 6d101mm (4.0") | 11d152mm (6.0") | 10d120mm (4.7") | 11d142mm (5.6") | 8d95mm (3.8") | 11d122mm (4.8") | 15d239mm (9.4") | 16d474mm (18.7") | 11d310mm (12.2") |
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.
June in Thailand (Koh Samui) is generally manageable, but with 10 rain days it's not a reliably sunny month. Better conditions can be found in February, March, April, and August.
Daytime highs reach 33°C (91°F) with a daily average of 30°C (86°F) — nights stay warm at 27°C (81°F). Peaks reach around 35°C (95°F), the coldest nights around 24°C (75°F). The sun shines an average of 8 hours per day; there are 10 rain days with 120 mm (4.7 in) total. The water is a warm 30°C (86°F) — perfect for snorkelling and swimming.
Sun protection, a hat, and plenty of water are essential at these temperatures. Plan activities for early morning or evening.
Packing list for Thailand (Koh Samui) in June
- Light summer clothes
- Swimwear and beach towel
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Light umbrella or rain poncho
- Insect repellent
- Travel first-aid kit
Frequently Asked Questions
- Is June a good time to visit Thailand (Koh Samui)?
- June is not an optimal month for Thailand (Koh Samui) (Score: 67/100), but it is manageable. For better conditions, consider February, March, April, and August.
- How warm is it in Thailand (Koh Samui) in June?
- In June, Thailand (Koh Samui) sees daily highs of 33°C (91°F). Nights cool to 27°C (81°F), with a daily average of 30°C (86°F). Peaks reach around 35°C (95°F), the coldest nights around 24°C (75°F).
- How much rain falls in Thailand (Koh Samui) in June?
- In June, Thailand (Koh Samui) receives an average of 120 mm (4.7 in) of rain over 10 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Thailand (Koh Samui) get in June?
- Thailand (Koh Samui) averages 8 sunshine hours per day in June — close to the annual average.
- How warm is the water in Thailand (Koh Samui) in June?
- Water temperature in Thailand (Koh Samui) in June averages 30°C (86°F) — ideal for swimming and snorkelling.
