Ko Raya Noi

Island

Raya Noi, south of Phuket, is a low-lying island known for clear water and dive sites; day-trip boats bring snorkelers and scuba divers to its reefs.

Ko Raya Noi (Raya Noi) is the smaller Racha island located to the south of Phuket in the Andaman Sea. The island is a low-lying, reef-fringed destination noted for clear water and snorkeling close to its beaches.

Day-trip services and speedboats from Phuket’s Chalong Pier and other nearby harbors provide the main access, and visitors come for swimming, snorkeling, and short beach stays rather than extensive resort infrastructure. The island has limited development compared with its larger neighbour, Racha Yai.

Historically the island remained sparsely developed; tourism activity has been centered on day trips and small-scale accommodation rather than large hotels. Marine conditions and nearby reefs make it a common spot for snorkel and dive outings.

Ko Raya Noi sits southwest of Phuket in the Andaman Sea and is approached by boat from Phuket’s east-coast piers.

  • Snorkeling and access: Part of the small Racha (Raya) island group south of Phuket, it is known for clear water and snorkeling close to its shores and is commonly visited on day trips from Phuket's Chalong Pier.
Ko Raya Noi
Koh Raya Noi (Raya Noi), off Phuket (Racha Islands), Thailand - boat access
7.5050, 98.3260
Open 24 hours
Free

Tips for Visiting Ko Raya Noi #

  • Take a dedicated day-trip boat from Chalong or scheduled dive/snorkel operators in the morning when visibility is best and operators run fewer, more direct runs.
  • Plan for minimal facilities on the island - boats typically anchor offshore and you'll transfer by dinghy, so book with an operator that provides gear and a clear landing plan.

Best Time to Visit Ko Raya Noi #

Visit Ko Raya Noi in the dry season (November-April) for the best sea conditions and island activities; expect fewer services and wetter weather in the monsoon months.

Dry / peak season (best time)
November-April · ~24-32°C
Calm seas and sunny weather make island visits and snorkeling around Raya Noi most pleasant; busiest period.
Monsoon / wet season
May-October · ~24-31°C
More frequent rain and rough seas reduce boat trips and visitor numbers; some operators scale back services.

Weather & Climate near Ko Raya Noi #

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 23°C to 33°C. Heavy rainfall (2178 mm/year), wettest in September.

Air Quality: AQI 50 Good
Best Time to Visit
FebruaryJanuaryDecember
Temperature & Rainfall
Temperature Range
31°
Warmest Month
25°
Coldest Month
Monthly Conditions

January

January is hot, feeling like 30°C due to high humidity. Moderate rainfall (40 mm) and partly cloudy skies.

79 Very Good

Comfort

30°
Feels Like Hot
27°C
Temperature
23° 32°
79%
Humidity
Very Humid

Weather

40 mm
Rainfall
1.9 m/s
Wind
Calm
2.1
UV Index
Extreme
11.6h daylight

February

February is hot, feeling like 31°C due to high humidity. Moderate rainfall (44 mm).

81 Excellent

Comfort

31°
Feels Like Hot
28°C
Temperature
23° 32°
76%
Humidity
Very Humid

Weather

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

March

March is hot, feeling like 32°C due to high humidity. Moderate rainfall (57 mm) and partly cloudy skies.

77 Very Good

Comfort

32°
Feels Like Hot
28°C
Temperature
24° 33°
77%
Humidity
Very Humid

Weather

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

April

April is the hottest month, feeling like 33°C due to high humidity. Significant rainfall (129 mm) and partly cloudy skies.

65 Good

Comfort

33°
Feels Like Hot
29°C
Temperature
24° 33°
78%
Humidity
Very Humid

Weather

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

May

May is hot, feeling like 32°C due to high humidity. Heavy rain (220 mm) and mostly overcast skies.

55 Acceptable

Comfort

33°
Feels Like Hot
28°C
Temperature
24° 32°
80%
Humidity
Very Humid

Weather

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

June

June is hot, feeling like 32°C due to high humidity. Heavy rain (214 mm) and mostly overcast skies.

55 Acceptable

Comfort

32°
Feels Like Hot
28°C
Temperature
25° 32°
80%
Humidity
Very Humid

Weather

214 mm
Rainfall
2.7 m/s
Wind
Calm
2.1
UV Index
Extreme
12.4h daylight

July

July is hot, feeling like 31°C due to high humidity. Heavy rain (247 mm) and mostly overcast skies.

63 Good

Comfort

31°
Feels Like Hot
28°C
Temperature
24° 31°
80%
Humidity
Very Humid

Weather

247 mm
Rainfall
2.8 m/s
Wind
Calm
2.1
UV Index
Extreme
12.4h daylight

August

August is hot, feeling like 31°C with oppressive humidity. Heavy rain (313 mm) and mostly overcast skies.

64 Good

Comfort

31°
Feels Like Hot
28°C
Temperature
24° 31°
81%
Humidity
Very Humid

Weather

313 mm
Rainfall
3.1 m/s
Wind
Light Breeze
2.2
UV Index
Extreme
12.2h daylight

September

September is hot, feeling like 30°C with oppressive humidity. The wettest month with heavy rain (352 mm) and mostly overcast skies.

63 Good

Comfort

30°
Feels Like Hot
27°C
Temperature
24° 30°
81%
Humidity
Very Humid

Weather

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

October

October is warm with stifling humidity (dew point 24°C). Heavy rain (305 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 30°
82%
Humidity
Very Humid

Weather

305 mm
Rainfall
1.8 m/s
Wind
Calm
2.1
UV Index
Extreme
11.8h daylight

November

November is hot, feeling like 30°C with oppressive humidity. Significant rainfall (184 mm) and mostly overcast skies.

67 Good

Comfort

30°
Feels Like Hot
27°C
Temperature
24° 31°
81%
Humidity
Very Humid

Weather

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

December

December is warm with muggy conditions (dew point 24°C). Moderate rainfall (73 mm) and partly cloudy skies.

79 Very Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 31°
80%
Humidity
Very Humid

Weather

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

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