Hat Yai climate
Hat Yai (Thailand) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 27 °C81 °F, and about 2,020 mm80 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Hat Yai climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2475 | 2678 | 1084.3 |
| Feb | 2983 | 2374 | 2679 | 321.3 |
| Mar | 3085 | 2476 | 2781 | 883.5 |
| Apr | 3187 | 2578 | 2883 | 1154.5 |
| May | 3087 | 2679 | 2883 | 1556.1 |
| Jun | 3086 | 2678 | 2882 | 1405.5 |
| Jul | 3085 | 2577 | 2781 | 1475.8 |
| Aug | 3085 | 2577 | 2781 | 1656.5 |
| Sep | 2985 | 2577 | 2781 | 1867.3 |
| Oct | 2984 | 2577 | 2780 | 26110 |
| Nov | 2883 | 2577 | 2780 | 34614 |
| Dec | 2882 | 2476 | 2679 | 27611 |
| Year | 3187 | 2374 | 2781 | 2,02080 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 86% | 64% | 4.7 | 11:45 |
| Feb | 84% | 50% | 5.7 | 11:54 |
| Mar | 83% | 52% | 6.0 | 12:04 |
| Apr | 82% | 63% | 5.8 | 12:16 |
| May | 83% | 81% | 5.2 | 12:26 |
| Jun | 84% | 81% | 5.0 | 12:32 |
| Jul | 84% | 82% | 5.0 | 12:29 |
| Aug | 84% | 82% | 5.1 | 12:21 |
| Sep | 85% | 84% | 5.0 | 12:09 |
| Oct | 86% | 84% | 4.6 | 11:57 |
| Nov | 87% | 84% | 4.0 | 11:48 |
| Dec | 87% | 79% | 3.9 | 11:43 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Hat Yai is like
The warmest month is May, with an average high of 30 °C87 °F and a low of 26 °C79 °F. The coldest is January, when highs average 28 °C82 °F and lows 24 °C75 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.4 °C4.3 °F.
It is very wet, receiving about 2,020 mm80 in of precipitation per year. The wettest three-month stretch is October–December, which brings 44% of the annual total. The wettest month is November (346 mm14 in), the driest is February (32 mm1.3 in).
Relative humidity ranges from 82% in April to 87% in November. The clearest skies (lowest average cloud amount, 50%) are typical of February. Average wind speed near the ground ranges from 6 km/h (4 mph) in May to 12 km/h (7 mph) in January.
Best time to visit Hat Yai
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February. Average highs then reach 29 °C83 °F to 29 °C83 °F. Precipitation is 32 mm1.3 in to 32 mm1.3 in per month.
The most challenging month is November, which is very wet (346 mm14 in) and humid (87% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Hat Yai
- Wetter months (September–December) — highs 2882 to 29 °C85 °F, lows 2476 to 25 °C77 °F, about 267 mm11 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (January–August) — highs 2882 to 31 °C87 °F, lows 2374 to 26 °C79 °F, about 119 mm4.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Hat Yai compares
The nearest larger place is Alor Setar, about 100 km to the south. Compared with it, Hat Yai is on average 0.3 °C0.6 °F cooler. It receives 12% less precipitation (2,020 mm80 in vs 2,303 mm91 in). The difference is largest in February (1 °C1.8 °F cooler).
World Climates covers 22 places in Thailand. By annual mean temperature, Hat Yai is the 16th warmest of them. By annual precipitation, it is the 4th wettest. See all of them on the Thailand climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Alor Setar (Malaysia, Am), Pasir Mas (Malaysia, Am) and Kota Kuala Muda (Malaysia, Af).
Nearby places
- Climate in Alor Setar 100 km · 27 °C81 °F · 2,303 mm91 in
- Climate in Langkawi (Kuah) 103 km · 28 °C82 °F · 2,198 mm87 in
- Climate in Kota Kuala Muda 158 km · 27 °C81 °F · 2,353 mm93 in
- Climate in Nakhon Si Thammarat 168 km · 27 °C81 °F · 2,360 mm93 in
- Climate in Paya Terubong 183 km · 27 °C81 °F · 2,353 mm93 in
- Climate in Pasir Mas 212 km · 27 °C80 °F · 2,422 mm95 in
- Climate in Kota Bharu 219 km · 27 °C81 °F · 2,538 mm100 in
- Climate in Taiping 242 km · 28 °C82 °F · 2,370 mm93 in
Frequently asked questions
What is the warmest month in Hat Yai?
May is the warmest month in Hat Yai. Its average high is 30 °C (87 °F) and its average low is 26 °C (79 °F).
What is the coldest month in Hat Yai?
January is the coldest month. Its average high is 28 °C (82 °F) and its average low is 24 °C (75 °F).
When does it rain the most in Hat Yai?
November is the wettest month with about 346 mm (13.6 in) of precipitation. February is the driest with about 32 mm (1.3 in).
What is the best time to visit Hat Yai?
Judging by long-term averages, the most comfortable months are February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.