Rạch Giá climate
Rạch Giá (Vietnam) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C82 °F, and about 1,477 mm58 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rạch Giá climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3188 | 2271 | 2780 | 210.8 |
| Feb | 3493 | 2373 | 2883 | 110.4 |
| Mar | 3595 | 2476 | 3085 | 281.1 |
| Apr | 3595 | 2678 | 3087 | 592.3 |
| May | 3290 | 2680 | 2985 | 1425.6 |
| Jun | 3086 | 2679 | 2882 | 2118.3 |
| Jul | 2985 | 2678 | 2781 | 2148.4 |
| Aug | 2984 | 2578 | 2781 | 2058.1 |
| Sep | 2984 | 2578 | 2781 | 2379.3 |
| Oct | 2985 | 2576 | 2780 | 1927.6 |
| Nov | 3085 | 2475 | 2780 | 1164.6 |
| Dec | 3086 | 2272 | 2679 | 411.6 |
| Year | 3595 | 2271 | 2882 | 1,47758 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 74% | 57% | 5.0 | 11:36 |
| Feb | 66% | 53% | 5.5 | 11:48 |
| Mar | 64% | 55% | 5.7 | 12:03 |
| Apr | 66% | 61% | 5.9 | 12:20 |
| May | 77% | 82% | 5.4 | 12:35 |
| Jun | 84% | 86% | 5.0 | 12:42 |
| Jul | 86% | 87% | 4.8 | 12:39 |
| Aug | 87% | 88% | 4.9 | 12:27 |
| Sep | 87% | 88% | 4.8 | 12:10 |
| Oct | 87% | 82% | 4.8 | 11:53 |
| Nov | 85% | 75% | 4.8 | 11:39 |
| Dec | 80% | 69% | 4.8 | 11:32 |
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 Rạch Giá is like
The warmest month is April, with an average high of 35 °C95 °F and a low of 26 °C78 °F. The coldest is December, when highs average 30 °C86 °F and lows 22 °C72 °F. Seasonal differences are small — just 4.2 °C7.6 °F between the warmest and the coolest month.
It is wet, with about 1,477 mm58 in of precipitation per year. The wettest three-month stretch is July–September, which brings 44% of the annual total. Months with less than 20 mm0.8 in on average: February. The wettest month is September (237 mm9.3 in), the driest is February (11 mm0.4 in).
Relative humidity ranges from 64% in March to 87% in September. The clearest skies (lowest average cloud amount, 53%) are typical of February. Average wind speed near the ground ranges from 8 km/h (5 mph) in October to 13 km/h (8 mph) in August. Daylight lasts from about 11.5 hours in December to 12.7 hours in June.
Best time to visit Rạch Giá
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December and January: average highs of 30 °C86 °F to 31 °C88 °F with 21 mm0.8 in to 41 mm1.6 in of precipitation per month.
The most challenging month is September, which is very wet (237 mm9.3 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 Rạch Giá
- Wetter months (May–October) — highs 2984 to 32 °C90 °F, lows 2576 to 26 °C80 °F, about 200 mm7.9 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 (November–April) — highs 3085 to 35 °C95 °F, lows 2271 to 26 °C78 °F, about 46 mm1.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Rạch Giá compares
Compared with Cần Thơ, about 78 km to the east, Rạch Giá is on average 0.3 °C0.6 °F warmer and receives a similar amount of precipitation. The difference is largest in January (0.5 °C1 °F warmer).
Of the 75 places in Vietnam covered by World Climates, Rạch Giá is the 8th warmest by annual mean temperature and the 47th wettest by annual precipitation. See all of them on the Vietnam climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Takeo (Cambodia, Aw), Phnom Penh (Cambodia, Aw) and Mojokerto (Indonesia, Aw).
Nearby places
- Long Xuyên 57 km · 28 °C82 °F · 1,265 mm50 in
- Tịnh Biên 67 km · 28 °C82 °F · 1,355 mm53 in
- Hà Tiên 77 km · 28 °C82 °F · 1,996 mm79 in
- Cần Thơ 78 km · 27 °C81 °F · 1,442 mm57 in
- Ngã Bảy 84 km · 28 °C82 °F · 1,442 mm57 in
- Tân Châu 89 km · 28 °C82 °F · 1,287 mm51 in
- Hồng Ngự 92 km · 28 °C83 °F · 1,199 mm47 in
- Cà Mau 93 km · 28 °C82 °F · 1,837 mm72 in
Frequently asked questions
What is the warmest month in Rạch Giá?
April is the warmest month in Rạch Giá, with an average high of 35 °C (95 °F) and an average low of 26 °C (78 °F).
What is the coldest month in Rạch Giá?
December is the coldest month, with an average high of 30 °C (86 °F) and an average low of 22 °C (72 °F).
When does it rain the most in Rạch Giá?
September is the wettest month with about 237 mm (9.3 in) of precipitation; February is the driest with about 11 mm (0.4 in).
What is the best time to visit Rạch Giá?
Judging by long-term averages, the most comfortable months are December and January.
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.