June · Thailand weather
Thailand in June: Weather, What to Expect & Where to Go
Updated
June is one of the most underrated months. Rain comes in short bursts, the landscape is green, and crowds are minimal everywhere except Samui. If you can handle the occasional drenching, this is when Thailand feels most local.
Best region
Gulf
Koh Samui, Phangan, and Tao are still on their dry calendar — June is peak season here.
Avoid
Andaman
Phuket and Krabi are deep into the southwest monsoon. Dive boats are mostly grounded.
Good for
Gulf islands, Chiang Mai's green season, value travel
June weather, region by region
Average temperatures and rainfall across Thailand's five climate regions in June. Tap the climate map on the homepage for an interactive month-by-month view.
| Region | Avg temp | Rainfall | Visit rating |
|---|---|---|---|
North Chiang Mai | 28°C | 135mm | Great |
Northeast Nakhon Ratchasima (Korat) | 29°C | 190mm | Good |
Central Bangkok | 30°C | 150mm | Great |
Andaman Phuket | 28°C | 300mm | Good |
Gulf Koh Samui | 29°C | 110mm | Great |
City spotlights
One city per region — what June actually feels like on the ground, and what to do or skip.
North
Chiang Mai
By the numbers
Chiang Mai averages 28°C — highs around 31°C, nights around 23°C. Around 135mm of rain across 13 days, mostly afternoon storms. Air is clean, mountains visible again.
Lush, mild, and atmospheric. Possibly the best month to visit Chiang Mai if you don't mind afternoon rain — half the price of February, none of the haze.
Air is clean, mountains are lush, temperatures are mild (high 20s). The best month to visit Chiang Mai if you don't mind afternoon rain.
Year-round climate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Northeast
Nakhon Ratchasima (Korat)
By the numbers
Korat averages 29°C with afternoon highs of 32°C. Around 190mm of rain across 16 days, often as evening storms. Khao Yai is at its lushest.
Rain is regular but rarely all-day. Khao Yai's forest is in full voice — leech socks are not a joke if you're hiking.
Rain is regular but rarely all-day. Khao Yai is at its lushest — leech socks are not a joke if you're hiking, but the forest is in full voice.
Year-round climate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Central
Bangkok
By the numbers
Bangkok averages 30°C with around 150mm of rain across 13 days. Storms hit mostly in late afternoon, leaving evenings clear. Humidity stays at 80%.
Hot, humid, with steady late-afternoon storms. Plan indoor afternoons — markets and rooftops are best in the morning.
Hot and humid with steady late-afternoon storms. Plan indoor afternoons — markets and rooftops are best in the morning.
Year-round climate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Andaman
Phuket
By the numbers
Phuket averages 28°C with around 300mm of rain across 21 days. Sea visibility 5–10m, choppy seas, most dive operators closed.
Heavy rain, rough seas, dive boats grounded. Cheap, but you're paying with weather days.
Heavy rain, choppy seas, dive operators winding down. Cheap, but you're paying with weather days.
Year-round climate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Gulf
Koh Samui
By the numbers
Koh Samui averages 29°C with around 110mm of rain across 8–9 days, mostly brief. Sea temperature 30°C, calm conditions.
Peak Gulf beach weather. Hot, dry, and bright — Samui at its absolute best.
Peak season on the Gulf side. Hot, dry, and bright — this is when Samui is at its absolute best.
Year-round climate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Events & festivals in June
Low season on the Andaman
Hotel rates on Phuket and Krabi are at their lowest of the year — half winter prices is common.
Where to actually go
Ten days in June
- 2days
Bangkok
Storms are predictable. Mornings for markets, afternoons for malls.
Train · 13h overnight sleeperBook on 12Go - 3days
Chiang Mai
Clean air, green mountains, half the price of February. Underrated month.
Flight · ~3h with layoverBook on 12Go - 5days
Koh Samui
Peak Gulf beach weather. Reliable sun, calm seas.
Skip a beach-and-dive Andaman trip. Phuket and Krabi are at their wettest — save them for November onwards.
Sea conditions in June
Thailand has two coastlines on opposite monsoon calendars. Here's what each looks like this month for swimming, diving, and boat trips.
Andaman coast — Phuket, Krabi, Phi Phi
Deep monsoon. Dive operators grounded, long-tail boats docked, rip currents on west-facing beaches. Sea temperature warm but visibility drops to 5–10m.
Gulf coast — Samui, Phangan, Tao
At peak. Sea temperature 30°C, glass-flat mornings, Koh Tao diving runs every day with 20–30m visibility.
How crowded is Thailand in June?
Quietest month of the year on the Andaman side; busy on Samui. Phuket hotel rates are at their annual lowest (often 50%+ off peak). Chiang Mai is cheap and walks up easily.
What to pack for Thailand in June
- Compact rain jacket or poncho
- Quick-dry clothes only — cotton stays wet
- Waterproof shoes or sandals you don't mind soaking
- Insect repellent (mosquitoes are at their most active)
- Dry bag for electronics on island and boat trips
June rain is heavy but short. Mornings are typically dry; storms hit between 3pm and 7pm. Plan sightseeing accordingly and you'll rarely lose a full day.
Thailand in June — common questions
Is June a good time to visit Thailand?
Yes, especially if you're a returning visitor. June is when Thailand feels least touristy — green landscapes, predictable afternoon storms, and shoulder-season prices everywhere except Samui. Stick to the north, the Gulf, or Bangkok and you'll get great value with manageable weather. The Andaman coast is best avoided this month.
Is June rainy season in Thailand?
Yes — June sits in the middle of the southwest monsoon, but with a much milder rhythm than May or September. Bangkok and the north see brief, heavy afternoon storms (typically 1–2 hours) followed by clear evenings. The Andaman coast gets the heaviest rain (300mm+ for the month) while the Gulf islands stay dry.
How hot is Bangkok in June?
Bangkok averages 30°C with afternoon highs of 33–34°C and overnight lows of 26°C. The afternoon storms keep absolute temperatures slightly below April–May, but humidity stays high at 80%. The city feels muggy and sticky throughout the day.
Is June a good time for Koh Samui?
Yes — June is peak season for Koh Samui, Koh Phangan, and Koh Tao. The Gulf islands are on a flipped calendar and stay dry from April through August. Expect reliable sun, sea temperatures of 30°C, and exceptional diving visibility (20–30m) on Koh Tao.
Why is the Andaman coast bad in June?
The southwest monsoon hits the Andaman coast head-on. Phuket and Krabi see 300mm of rain across 20+ wet days, dive operators close for the season, long-tail boats stay docked, and west-facing beaches develop strong rip currents. Hotel rates collapse, but you'll lose multiple days to weather.
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Gulf islands, fewer crowds, lower prices
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Isaan candle festivals, Gulf beaches, Chiang Mai
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