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Ko Racha Yai Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ko Racha Yai.
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10-day forecastForecast
Climate overview of Ko Racha Yai
Ko Racha Yai, Phuket Province, Thailand, enjoys a steady climate throughout the year, with daytime temperatures typically around 30°C (86°F). April is the warmest month at 30°C (86°F), while October is the coolest at 29°C (84°F).
The city has a wet climate, receiving around 2103 mm (83 in) of rainfall per year. Despite the high annual total, it has a distinct rainy season from May to November. October is the wettest month. The most sunshine falls in January, with an average of 7.8 hours of daily sunshine.
Ko Racha Yai Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ko Racha Yai - and find the best time to visit.
Monthly Temperature in Ko Racha Yai
The temperature in Ko Racha Yai remains steady throughout the year, providing a consistently very warm climate. On average, daytime temperatures range from a very warm 30°C (86°F) in April to a comfortable 29°C (84°F) in October.
Nighttime temperatures range from 27°C (81°F) in April to 26°C (79°F) in October.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ko Racha Yai
Ko Racha Yai has a relatively rainy climate with high precipitation levels, averaging 2103 mm (83 in) of rainfall annually. The seasons in Ko Racha Yai bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 301 mm (12 in) of precipitation. This rainfall is distributed across 22 rainy days.
In contrast, the driest month, February, experiences much less rainfall, totaling 35 mm (1.4 in) over 3 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Ko Racha Yai Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Ko Racha Yai
In Ko Racha Yai, summer days are longer and more sunny, with daily sunshine hours peaking at 7.8 hours in January. As the darker season arrives, the brightness of the sun becomes less. September sees a soft sun for only 3.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Phuket, Thailand (55 KM, 34 Miles).
Daily hours of sunshine
Data from: Phuket, Thailand (55 KM, 34 Miles).
Humidity in Ko Racha Yai by Month
The relative humidity is high throughout the year in Ko Racha Yai.
The city experiences its highest humidity in August, reaching 82%. In January, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Phuket, Thailand (55 KM, 34 Miles).
Best Time to Visit Ko Racha Yai
For comfortable weather, consider visiting Ko Racha Yai in December. Conditions are usually least favourable in May, June, July, August, September and October.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
good
Feb
good
Mar
good
Apr
mixed
May
very wet
Jun
wet
Jul
wet
Aug
very wet
Sep
very wet
Oct
very wet
Nov
mixed
Dec
very good
- Best overall: December
- Warmest weather: all year round
- Most sunshine: January
- Fewest rainy days: January, February and March
- Seasonal pattern: A distinct rainy season from May to November
Frequently asked questions about the climate in Ko Racha Yai
What is the best time to visit Ko Racha Yai?
December typically offers the most optimal weather in Ko Racha Yai. In contrast, May, June, July, August, September and October tend to have less optimal conditions. Ko Racha Yai has a distinct rainy season from May to November.
What temperatures can I expect in Ko Racha Yai?
Daytime highs range from 29°C (84°F) in October to 30°C (86°F) in April. Nighttime lows range from 26°C (79°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
How much rain does Ko Racha Yai get?
Annual rainfall is around 2103 mm (83 in). October is the wettest month with 301 mm (12 in), while February is the driest with 35 mm (1.4 in).
How sunny is Ko Racha Yai?
Ko Racha Yai receives around 2,066 hours of sunshine per year. January is the sunniest month with 235 hours, while September is the cloudiest with just 100 hours. Overall, Ko Racha Yai enjoys abundant sunshine.
Ko Racha Yai 3-Day Forecast
Ko Racha Yai on the map
Ko Racha Yai is highlighted - select any city to see its climate.
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