Hat Ton Sai

Beach Small beach near Railay, renowned for rock climbing

Ton Sai Bay on Ko Phi Phi, the island’s main harbor with frequent ferries, dive shops, boat charters and an active evening scene.

Hat Ton Sai is the beach area known in English as Tonsai Beach on the Railay peninsula in Krabi province, southern Thailand. The beach occupies the narrow strip between Railay East and Railay West and is noted for its informal, backpacker-oriented atmosphere and climbing facilities.

Tonsai functions as a hub for rock climbers and independent travelers, with basic bungalows, climbing outfitters, and a compact network of trails and beachside bars. The area can be crowded in high season and offers direct access to climbing sectors on the adjacent limestone cliffs.

Historically a small fishing and farming locality, Tonsai’s character changed as climbers and budget travelers arrived from the 1980s onward; accommodation and services adapted to that visitor profile. The beach continues to be car-free and accessible only by boat.

Hat Ton Sai is located on the southern flank of the Railay peninsula and is reached by longtail boat from Ao Nang and nearby piers; it sits within the same karst landscape that defines Railay and Phra Nang beaches.

  • Climbing and access: Connected to Railay West by a short walking path and steps, the beach is a base for the area's climbing community and budget accommodation options.
Hat Ton Sai
Tonsai / Ton Sai Beach (Hat Ton Sai), Railay/Krabi area, Thailand
7.6900, 98.7600
Open 24 hours
Free

How to Get to Hat Ton Sai #

Hat Ton Sai (Tonsai Beach) is adjacent to Railay on the Krabi coast and likewise has no road access. Take a long-tail boat from Ao Nang Beach (about 10-20 minutes depending on tides and boat type) - boats land on the beach and it’s a short walk between Tonsai and the Railay beaches. There are no scheduled road buses to Tonsai; access is by water only.

Tips for Visiting Hat Ton Sai #

  • Visit mid-morning on weekdays to catch the climbing community in action while avoiding peak tourist arrival times; Tonsai can be very busy on weekends.
  • Land at the small Tonsai pier or walk the path from Railay - arriving on foot lets you bypass some boat drop-off congestion and find quieter spots.
  • Explore the small coves and climbing boulders away from the central beach; many visitors stick to the main sand and miss tide pools and climbing routes just around the headlands.

Best Time to Visit Hat Ton Sai #

The best time to visit Hat Ton Sai is in the dry months November-March for good weather and active climbing/boat options; the wet season is quieter and wetter.

Dry / peak season (best time)
November-March · ~24-32°C
Stable weather and calm seas are ideal for visiting Ton Sai Beach and for rock-climbing and beach activities nearby.
Monsoon / wet season
May-October · ~24-31°C
Heavier rains and rough seas lead to fewer visitors and occasional disruption to boat transfers.

Weather & Climate near Hat Ton Sai #

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 24°C to 34°C. Heavy rainfall (2103 mm/year), wettest in September with a pronounced dry season.

Air Quality: AQI 51 Moderate
Best Time to Visit
JanuaryFebruaryMarch
Temperature & Rainfall
Temperature Range
32°
Warmest Month
24°
Coldest Month
Monthly Conditions

January

January is hot, feeling like 34°C due to high humidity. The driest month with just 29 mm and partly cloudy skies.

79 Very Good

Comfort

34°
Feels Like Hot
29°C
Temperature
24° 33°
80%
Humidity
Very Humid

Weather

29 mm
Rainfall
1.8 m/s
Wind
Calm
2.1
UV Index
Extreme
11.6h daylight

February

February is hot, feeling like 34°C due to high humidity. Moderate rainfall (37 mm).

79 Very Good

Comfort

34°
Feels Like Hot
29°C
Temperature
25° 34°
76%
Humidity
Very Humid

Weather

37 mm
Rainfall
2.4 m/s
Wind
Calm
2.5
UV Index
Extreme
11.8h daylight

March

March is hot, feeling like 35°C due to high humidity. Moderate rainfall (54 mm) and partly cloudy skies.

75 Very Good

Comfort

35°
Feels Like Hot
30°C
Temperature
25° 34°
76%
Humidity
Very Humid

Weather

54 mm
Rainfall
2.2 m/s
Wind
Calm
2.6
UV Index
Extreme
12.0h daylight

April

April is the hottest month, feeling like 37°C due to high humidity. Significant rainfall (127 mm) and partly cloudy skies.

63 Good

Comfort

37°
Feels Like Hot
30°C
Temperature
25° 34°
78%
Humidity
Very Humid

Weather

127 mm
Rainfall
1.7 m/s
Wind
Calm
2.5
UV Index
Extreme
12.2h daylight

May

May is hot, feeling like 36°C due to high humidity. Heavy rain (207 mm) and mostly overcast skies.

53 Acceptable

Comfort

36°
Feels Like Hot
30°C
Temperature
26° 34°
79%
Humidity
Very Humid

Weather

207 mm
Rainfall
2.2 m/s
Wind
Calm
2.1
UV Index
Extreme
12.3h daylight

June

June is hot, feeling like 36°C due to high humidity. Heavy rain (204 mm) and mostly overcast skies.

53 Acceptable

Comfort

36°
Feels Like Hot
29°C
Temperature
26° 33°
79%
Humidity
Very Humid

Weather

204 mm
Rainfall
2.2 m/s
Wind
Calm
2.1
UV Index
Extreme
12.4h daylight

July

July is hot, feeling like 34°C due to high humidity. Heavy rain (240 mm) and mostly overcast skies.

53 Acceptable

Comfort

34°
Feels Like Hot
29°C
Temperature
25° 33°
79%
Humidity
Very Humid

Weather

240 mm
Rainfall
2.4 m/s
Wind
Calm
2.1
UV Index
Extreme
12.4h daylight

August

August is hot, feeling like 34°C due to high humidity. Heavy rain (302 mm) and mostly overcast skies.

54 Acceptable

Comfort

34°
Feels Like Hot
29°C
Temperature
25° 32°
80%
Humidity
Very Humid

Weather

302 mm
Rainfall
3.2 m/s
Wind
Light Breeze
2.2
UV Index
Extreme
12.2h daylight

September

September is hot, feeling like 33°C with oppressive humidity. The wettest month with heavy rain (335 mm) and mostly overcast skies.

55 Acceptable

Comfort

33°
Feels Like Hot
28°C
Temperature
25° 32°
81%
Humidity
Very Humid

Weather

335 mm
Rainfall
2.2 m/s
Wind
Calm
2.2
UV Index
Extreme
12.1h daylight

October

October is hot, feeling like 33°C with oppressive humidity. Heavy rain (302 mm) and mostly overcast skies.

55 Acceptable

Comfort

33°
Feels Like Hot
28°C
Temperature
25° 32°
82%
Humidity
Very Humid

Weather

302 mm
Rainfall
1.7 m/s
Wind
Calm
2.1
UV Index
Extreme
11.8h daylight

November

November is hot, feeling like 33°C with oppressive humidity. Significant rainfall (196 mm) and mostly overcast skies.

59 Acceptable

Comfort

33°
Feels Like Hot
28°C
Temperature
25° 32°
82%
Humidity
Very Humid

Weather

196 mm
Rainfall
1.9 m/s
Wind
Calm
1.9
UV Index
Very High
11.7h daylight

December

December is hot, feeling like 33°C with oppressive humidity. Moderate rainfall (70 mm) and partly cloudy skies.

71 Very Good

Comfort

33°
Feels Like Hot
28°C
Temperature
25° 32°
81%
Humidity
Very Humid

Weather

70 mm
Rainfall
2.4 m/s
Wind
Calm
1.9
UV Index
Very High
11.6h daylight

Nearby Attractions to Hat Ton Sai