Chon Buri climate
Chon Buri (Thailand) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C81 °F, and about 1,508 mm59 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Chon Buri climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3289 | 2068 | 2679 | 200.8 |
| Feb | 3494 | 2272 | 2883 | 200.8 |
| Mar | 3595 | 2475 | 3085 | 562.2 |
| Apr | 3595 | 2578 | 3086 | 863.4 |
| May | 3391 | 2678 | 2984 | 1706.7 |
| Jun | 3188 | 2577 | 2883 | 1897.5 |
| Jul | 3087 | 2576 | 2781 | 2038.0 |
| Aug | 3086 | 2476 | 2781 | 2108.3 |
| Sep | 3085 | 2476 | 2781 | 29912 |
| Oct | 3086 | 2475 | 2780 | 2068.1 |
| Nov | 3085 | 2271 | 2678 | 401.6 |
| Dec | 3086 | 2067 | 2576 | 80.3 |
| Year | 3595 | 2067 | 2781 | 1,50859 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 67% | 40% | 5.0 | 11:25 |
| Feb | 64% | 35% | 5.5 | 11:41 |
| Mar | 66% | 48% | 5.7 | 12:01 |
| Apr | 69% | 61% | 6.1 | 12:25 |
| May | 78% | 84% | 5.5 | 12:44 |
| Jun | 83% | 89% | 5.3 | 12:54 |
| Jul | 84% | 91% | 5.1 | 12:50 |
| Aug | 85% | 92% | 5.1 | 12:34 |
| Sep | 87% | 91% | 4.9 | 12:11 |
| Oct | 87% | 78% | 4.7 | 11:49 |
| Nov | 83% | 59% | 4.9 | 11:29 |
| Dec | 74% | 47% | 4.9 | 11:20 |
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 Chon Buri is like
The warmest month is April, with an average high of 35 °C95 °F and a low of 25 °C78 °F. The coldest is December, when highs average 30 °C86 °F and lows 20 °C67 °F. Seasonal differences are small — just 5.4 °C9.7 °F between the warmest and the coolest month.
It is wet, with about 1,508 mm59 in of precipitation per year. The wettest three-month stretch is August–October, which brings 47% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is September (299 mm12 in), the driest is December (8 mm0.3 in).
Relative humidity ranges from 64% in February to 87% in September. The clearest skies (lowest average cloud amount, 35%) are typical of February. Average wind speed near the ground ranges from 6 km/h (4 mph) in October to 9 km/h (6 mph) in July. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.
Best time to visit Chon Buri
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December: average highs of 30 °C86 °F to 30 °C86 °F with 8 mm0.3 in to 8 mm0.3 in of precipitation per month.
The most challenging month is September, which is very wet (299 mm12 in) and humid (87% relative humidity).
Comfort score: months are ranked by how close they come to 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 Chon Buri
- Wetter months (May–October) — highs 3085 to 33 °C91 °F, lows 2475 to 26 °C78 °F, about 213 mm8.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (November–April) — highs 3085 to 35 °C95 °F, lows 2067 to 25 °C78 °F, about 38 mm1.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Chon Buri compares
Compared with Samut Prakan, about 49 km to the northwest, Chon Buri is on average 0.5 °C1 °F cooler and receives 16% more precipitation (1,508 mm59 in vs 1,302 mm51 in). The difference is largest in December (1 °C1.8 °F cooler).
Of the 22 places in Thailand covered by World Climates, Chon Buri is the 11th warmest by annual mean temperature and the 8th wettest by annual precipitation. See all of them on the Thailand climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Battambang (Cambodia, Aw), Siem Reap (Cambodia, Aw) and Cuiabá (Brazil, Aw).
Nearby places
- Si Racha 22 km · 28 °C83 °F · 1,347 mm53 in
- Pattaya 49 km · 28 °C83 °F · 1,347 mm53 in
- Samut Prakan 49 km · 28 °C82 °F · 1,302 mm51 in
- Bangkok 68 km · 28 °C82 °F · 1,361 mm54 in
- Rayong 81 km · 28 °C82 °F · 2,064 mm81 in
- Khlong Luang 86 km · 28 °C82 °F · 1,361 mm54 in
- Si Maha Phot 88 km · 27 °C81 °F · 1,546 mm61 in
- Kabin Buri 103 km · 27 °C81 °F · 1,533 mm60 in
Frequently asked questions
What is the warmest month in Chon Buri?
April is the warmest month in Chon Buri, with an average high of 35 °C (95 °F) and an average low of 25 °C (78 °F).
What is the coldest month in Chon Buri?
December is the coldest month, with an average high of 30 °C (86 °F) and an average low of 20 °C (67 °F).
When does it rain the most in Chon Buri?
September is the wettest month with about 299 mm (11.8 in) of precipitation; December is the driest with about 8 mm (0.3 in).
What is the best time to visit Chon Buri?
Judging by long-term averages, the most comfortable months are December.
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 — most of all 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.