Ko Racha Yai Temperature by Month
The average annual maximum temperature in Ko Racha Yai , Phuket Province, Thailand is 30°C (86°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Ko Racha Yai compares to cities worldwide.
Ko Racha Yai Monthly Temperatures
Year-round, Ko Racha Yai experiences a consistently comfortable climate. Maximum daytime temperatures range from a very warm 30°C (86°F) in April to a comfortable 29°C (84°F) in the coolest month, October. Nighttime temperatures range from 27°C (81°F) in April to 26°C (79°F) in October.
The chart below illustrates the average maximum day and minimum night temperatures in Ko Racha Yai by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. April, the warmest month, averages 183 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Ko Racha Yai vs Thailand
The map below shows the annual temperature across Thailand. You can also select individual months if you want to compare a specific time of year.
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Ko Racha Yai vs World: Temperature Compared
Ko Racha Yai 's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Ko Racha Yai ?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Ko Racha Yai , October is the coolest month, with average highs of 29°C (84°F) and humidity around 79% — considered high. In April, the warmest month, temperatures average 30°C (86°F) with 75% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Land Temperature: The average surface temperature across the Earth's land is around 14°C, but that figure hides enormous variation. In the Sahara, daytime temperatures can exceed 50°C. At the poles, averages fall below -30°C. Deserts are also notable for how quickly they cool at night — without moisture in the air to retain heat, temperatures can drop 30°C or more in just a few hours, making desert nights surprisingly cold.
Sea Temperature: The oceans average around 17°C at the surface — generally cooler than land. Because water absorbs and releases heat slowly, the sea acts as a buffer, keeping coastal climates more stable than inland areas. The deep ocean is a different story: below the sunlit upper layers, water stays near-freezing regardless of surface conditions.
Equatorial Regions: Near the equator, the sun is overhead year-round, producing consistent heat and fuelling tropical rainforests in places like the Amazon and Congo basins. Seasonal temperature variation is minimal, but these regions do experience distinct wet and dry seasons that shape their ecosystems.
Desert Regions: Desert temperatures swing wildly between seasons and even between day and night. The Sonoran Desert in North America can drop to 0°C on winter nights yet exceed 40°C on summer days. What all deserts share is very low rainfall — typically under 250mm per year.
Polar Regions: The Arctic and Antarctic experience extreme cold, with long stretches of darkness in winter and continuous daylight in summer. Arctic winter temperatures average around -30°C. In Antarctica's interior, it gets far colder — sometimes below -80°C in the coldest recorded spots.
Temperate Forests: Across North America, Europe, and East Asia, temperate forests see proper seasons — warm summers and cold winters, with average temperatures roughly between 5°C and 22°C depending on the time of year.
Mountain Regions: Temperature drops by roughly 6°C for every 1,000 metres of altitude. In ranges like the Andes or the Himalayas, that means you can move from temperate forest at lower elevations to permanent snow and ice at the peaks, all within a relatively short distance.
For more on Ko Racha Yai 's weather — including monthly rainfall, sunshine hours, and humidity — visit our Ko Racha Yai climate page.
