Things to Do in Koh Tao in June

Q: Is Koh Tao safe for solo travelers in June?

Koh Tao scores 7.6/10 for solo-traveler safety (see /research/solo-safety/). The biggest June risks are practical ones, mostly scooter crashes on rain-slick hill roads and rough ferry crossings, rather than crime.

VerdictGood
Ranked#5 of 12
PricesBudget

Stay in Koh Tao in June

50 hotels in the Trip.com pool for Koh Tao, from US$25 a night.

Opens Trip.com on Fri 4 Jun to Sun 6 Jun 2027; change the dates there.

Check June rates

June on Koh Tao falls on the fortunate side of the monsoon divide. The southwest monsoon drenches Phuket, Krabi, and the rest of the Andaman coast from May onward, but Koh Tao's position in the Gulf of Thailand, about 70 km (43 miles) off Chumphon, keeps it clear of the worst rain. Daytime highs hover near 28.9°C (84°F) and nights barely cool off, sitting around 26.7°C (80°F), with the sea off Sairee close to bath temperature.

June is not dry, though. Showers turn up on most days, but they tend to be short bursts that clear within an hour, and whole grey days are far less common here than on the Andaman side. The bigger shift is the wind, now blowing from the southwest: it kicks up chop along the west coast at Sairee and Mae Haad while leaving east-facing bays like Tanote and Aow Leuk glassy.

Crowds are thinner than in the December to April high season, and the European summer rush hasn't arrived yet (it starts in July). Dive schools in Sairee and Chalok Baan Kao still run full schedules, instructors have smaller groups, and bungalow owners are more willing to negotiate. For divers and snorkelers who can tolerate a daily shower, June is one of the better-value months on the island.

Why visit in June

The Gulf of Thailand stays out of the southwest monsoon's reach, so Chumphon Pinnacle and Sail Rock usually keep running in June while Similan trips out of Khao Lak shut down from mid-May.
Tanote Bay and Aow Leuk sit in the wind shadow of the southwest monsoon and often carry the calmest snorkeling water on the island through June.
Open Water course groups at Sairee and Chalok Baan Kao schools tend to be smaller before the July and August European holiday wave.
Southern fruit season peaks, and mangosteen, rambutan, and Chumphon durian reach Mae Haad stalls within a day of harvest.

Worth knowing

Rain falls on roughly 21 days of the month, so outdoor plans need a daily buffer, even though most showers pass quickly.
Southwest winds put chop on the west coast, and after a windy night Sairee Beach can have murky shallows and floating debris.
High-speed catamaran crossings from Chumphon can get rough, and people prone to seasickness tend to struggle on the roughly 2-hour run.
Humidity stays high day and night, so damp clothes and dive gear rarely dry fully on a bungalow balcony.

Best for

Think twice if

Weather measured 29° / 27°C 120mm rain · 21 rainy days · 78% humidity rains perceptibly ~2.3h/day · 72% of mornings dry

Crowds medium

Pack Quick-dry shorts and synthetic shirts, one packable rain shell, a 3mm shorty or rash guard for 90-minute dives, and sandals that grip wet concrete on the hills above Sairee.

June averages about 120mm (4.7 in) of rain across roughly 21 rainy days, which is less than May or July, and humidity sits near 78%, so the air feels heavy even under cloud. Most rain comes in short afternoon or overnight bursts, and blue sky often follows within an hour. The southwest wind shapes each day more than the temperature does, and it rarely feels scorching because cloud cover takes the edge off the sun most afternoons.

Seasonal caution

Southwest monsoon swell occasionally cancels or delays afternoon ferries between Chumphon and Mae Haad pier, so leave a buffer day before any international flight out of Bangkok or Samui.

Year-round climate

Averages from the last 5 years.

Monthly climate averages for Koh Tao
Month	Avg high (°C)	Avg low (°C)	Rainfall (mm)
Jan	27	25	20
Feb	27	25	76
Mar	28	26	33
Apr	29	27	80
May	29	27	189
Jun	29	27	120
Jul	29	26	172
Aug	28	26	145
Sep	28	26	192
Oct	28	25	275
Nov	28	25	336
Dec	27	25	135

Holidays and festivals in June

Public holidays

Queen Suthida's Birthday(วันเฉลิมพระชนมพรรษาพระราชินี)3 June 2027

Best things to do in June

Snorkeling Tanote Bay and Aow Leuk

water

Both coves sit on the east coast with shallow coral gardens starting within 30 m (100 ft) of the sand, and Shark Island is close enough to reach by strong swimming or a longtail hop, with blacktip reef sharks a reliable presence.

Southwest winds in June leave the east coast sheltered, and these bays run calmer and clearer than the west-facing Sairee side.

Booking tipThe steep road to Tanote washes out after heavy rain, so we'd take a songthaew taxi from Mae Haad rather than risk a scooter.

Open Water dive course

diving

A 3 to 4 day entry-level scuba certification from one of the schools in Sairee or Chalok Baan Kao, with training dives at Japanese Gardens, Twins and White Rock.

Groups are smaller than in high season or the July rush, and Gulf dive sites stay open while Andaman liveaboards pause for the monsoon.

Booking tipWalk into two or three schools on arrival day and compare group sizes; in June you rarely need to book more than a few days ahead.

Chumphon Pinnacle and Sail Rock deep dives

diving

Chumphon Pinnacle is a granite seamount northwest of the island that draws big schools of barracuda and trevally, while Sail Rock sits between Koh Tao and Koh Phangan and has a vertical swim-through called the Chimney.

Water temperatures run close to 29°C (84°F) in June, and batfish and chevron barracuda gather at the pinnacles in large numbers.

Booking tipBook your Sail Rock trip early in your stay, as southwest swell can cancel departures and you'll want room to reschedule.

Koh Nang Yuan morning visit

sightseeing

Three islets joined by a white sandbar sit about 1 km (0.6 miles) off Sairee's northern end, and a short climb leads to the viewpoint over the sandbar.

Boats from Koh Samui and Koh Phangan run fewer departures outside high season, and early June mornings can feel close to empty before 10:00.

Booking tipLongtail taxis leave from the north end of Sairee Beach; bring cash for the landing fee and note that plastic bottles are banned on the island.

John-Suwan Viewpoint hike

hiking

A short, steep scramble above Chalok Baan Kao ends on boulders with a view over both Freedom Beach and Shark Bay.

June showers clear the haze, so after a morning rain the views south toward Koh Phangan are often sharp.

Booking tipWe'd go after a shower has passed rather than during one, as the granite turns slick fast.

Night dive at Twins or White Rock

diving

Guided dives after sunset turn up hunting morays, cuttlefish, and the glow of bioluminescent plankton when divers cover their torches.

Warm June water and the plankton that monsoon runoff carries with it tend to produce stronger bioluminescence than you will see in the drier months.

Booking tipMost schools run night dives when four or more divers sign up, so put your name down a day ahead.

What to eat in June

In season: fruit

Mangosteen (mangkhut)
Mangosteen season across southern Thailand peaks in June, and fruit from Chumphon and Surat Thani plantations reaches Mae Haad stalls with purple rinds that still give slightly under the thumb.
Rambutan (ngoh)
Rambutan harvests in Surat Thani province run from May through July. By June, bags of the hairy red fruit sell cheaply at Mae Haad produce stands and Chalok Baan Kao minimarts.
Chumphon durian
Chumphon province, the mainland directly west of the ferry route, harvests durian from roughly May to August. Monthong and local varieties come across on morning boats, though most guesthouses ban the fruit indoors because of the smell.

On menus now

Khao niao mamuang (mango sticky rice)
The mango crop peaks in April and May, and early June marks the tail end of the Nam Dok Mai season before stalls move to other fruits.

Street food peaks

Pla muek yang (grilled squid)
Squid boats light up the Gulf at night during the southwest monsoon months, and grilled skewers with green chili and lime sauce appear at Mae Haad and Sairee roadside grills most evenings.

Regular events in June

Queen Suthida's BirthdayFree

A national public holiday honoring Queen Suthida: banks and government offices in Mae Haad close, and royal portraits with yellow and purple bunting go up around the pier.

June 3

Visakha Bucha DayFree

The Buddhist holy day marking the birth, enlightenment and death of the Buddha: alcohol sales stop nationwide for the day, and Sairee bars go quiet.

Sixth lunar full moon, usually late May or early June

World Oceans Day reef and beach cleanupsFree

Dive schools and conservation groups on Koh Tao often put together underwater cleanups and beach sweeps, and volunteer divers can sometimes join at no cost.

Around June 8

Full Moon Party at Haad Rin, Koh Phangan

The monthly beach party on Koh Phangan's Haad Rin Sunrise Beach draws many Koh Tao visitors who take a night boat over, and extra ferries tend to run that evening.

Around the June full moon

Best places this June

Tanote Bay
beach
This east-coast cove has boulders for jumping and reef fish close to shore, and it is at its calmest during southwest monsoon weeks.
Tanote
Aow Leuk
beach
A small east-side bay with a sandy bottom and a coral fringe, and one of the easiest snorkeling entries on the island in June.
Aow Leuk
Koh Nang Yuan
island
Three linked islets off the northwest coast with a sandbar and a summit viewpoint over the Gulf.
Sairee
John-Suwan Viewpoint
viewpoint
A granite outcrop above the southern tip that looks down on Shark Bay and Freedom Beach.
Chalok Baan Kao
Hin Wong Bay
beach
This rocky northeast bay sits at the end of a rough road, and its water is often clear when June winds churn up the west coast.
Hin Wong
Mae Haad pier and market lane
market
The island's ferry hub has fruit stalls and roadside grills where seasonal mangosteen and squid turn up first.
Mae Haad
Chumphon Pinnacle
dive site
The island's signature deep dive site, a submerged granite pinnacle roughly 11 km (7 miles) northwest of Sairee.
Sairee

Your packing checklist

Tick items off as you pack. Your progress saves in this browser.

0 of 8 packed

Packable rain shellJune showers usually pass in under an hour, and a light shell covers the ride from Mae Haad to your bungalow without making you sweat through it. Shop
Dry bag, 10 to 20 litersLongtail rides to Koh Nang Yuan and Tanote throw spray in the June swell, and phones and passports need protecting. Shop
Seasickness tabletsTake one 30 to 60 minutes before boarding the Chumphon catamaran or the Sail Rock boat, because southwest chop makes both crossings rougher than in March. Shop
3mm shorty wetsuit or long-sleeve rash guardThe water is warm, but three dives a day during a certification course still chill most people by the afternoon. Shop
Reef-safe mineral sunscreenCloud cover in June makes people skip sunscreen, yet the UV index often stays high, and Koh Tao's reefs suffer from oxybenzone runoff. Shop
Quick-dry microfiber towelWith humidity near 80%, cotton towels in a Sairee bungalow stay damp for days. Shop
HeadlampShort power cuts during storms are common in Chalok Baan Kao and on the east side, and the hill roads there have few streetlights. Shop
Sandals with real treadThe concrete ramps between Sairee and Mae Haad turn slippery after every shower. Shop

Insider tips

Check the wind before choosing a beach: in June, a southwest wind usually means the east coast at Tanote or Aow Leuk will be calmer than Sairee.
Ask your dive school to schedule Chumphon Pinnacle early in your stay, so if swell cancels the trip you still have time to rebook before you leave.
The mangosteen piles at Mae Haad stalls sell out by early afternoon, so buy before noon once the Chumphon boats have unloaded.
Walk-in rates for week-long bungalow stays in Chalok Baan Kao are often lower than anything listed online in June, especially if you pay in baht cash.

Avoid these mistakes

Renting a scooter to reach Tanote or Hin Wong after rain. The steep dirt sections turn to slick clay, and the clinic in Mae Haad treats road-rash injuries daily.
Booking the last afternoon ferry to Chumphon on the same day as an international flight from Bangkok. June swell delays are common enough to justify a buffer night.
Judging the whole island by one choppy morning at Sairee Beach and skipping the snorkeling. The sheltered east coast is often calm at the same moment.

Practical tips for June

Lomprayah and Songserm run ferries year-round from Chumphon, Koh Phangan, and Koh Samui into Mae Haad pier; in June, we'd book a morning departure because the southwest wind usually builds after midday and afternoon crossings get rougher as a result. ATMs cluster around Mae Haad and Sairee, but each withdrawal carries a hefty foreign card fee, so take out larger amounts less often. The island has one small hospital-grade clinic near Mae Haad, and serious diving injuries go to the recompression chamber on Koh Samui, so check that your travel insurance covers scuba. Temples in Mae Haad expect covered shoulders and knees on Buddhist holidays. Most dive schools run daily through June, and a few smaller cafes in Chalok Baan Kao cut their hours midweek.

FAQ

Is June a good time to visit Koh Tao?

Yes, for most travelers. June falls outside the Andaman monsoon's reach, crowds are below high-season levels, and dive conditions are generally solid. Expect short showers most days and choppy water on the west coast.

What is the weather like in Koh Tao in June?

Warm and humid with frequent but brief rain; the temperature barely changes between day and night, and southwest winds shape which beaches are calm. Most mornings start bright.

Is Koh Tao crowded in June?

Moderately. Dive schools stay busy with certification students, but the Sairee strip and Koh Nang Yuan are noticeably quieter than in February or August, and walk-in bungalow availability is good.

Is Koh Tao safe for solo travelers in June?

Koh Tao scores 7.6/10 for solo-traveler safety (see the TTDI Solo-Safety Index). The biggest June risks are practical ones, mostly scooter crashes on rain-slick hill roads and rough ferry crossings, rather than crime.

Can you see whale sharks at Koh Tao in June?

Sometimes, but June is not the strongest month for it. Divers report sightings at Chumphon Pinnacle and Sail Rock most often from March to May and again around September and October, so treat a June encounter as a bonus.