Savannakhet climate
Savannakhet (Laos) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 26 °C79 °F, and about 1,227 mm48 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Savannakhet climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 1560 | 2272 | 40.1 |
| Feb | 3290 | 1864 | 2577 | 110.4 |
| Mar | 3595 | 2170 | 2883 | 371.4 |
| Apr | 3798 | 2475 | 3086 | 522.0 |
| May | 3493 | 2476 | 2985 | 1475.8 |
| Jun | 3189 | 2475 | 2882 | 1626.4 |
| Jul | 3086 | 2475 | 2780 | 25510 |
| Aug | 3086 | 2474 | 2780 | 25910 |
| Sep | 3087 | 2373 | 2780 | 2017.9 |
| Oct | 3087 | 2170 | 2678 | 823.2 |
| Nov | 3085 | 1966 | 2476 | 120.5 |
| Dec | 2883 | 1661 | 2272 | 60.2 |
| Year | 3798 | 1560 | 2679 | 1,22748 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 68% | 31% | 5.0 | 11:14 |
| Feb | 61% | 31% | 5.3 | 11:35 |
| Mar | 57% | 46% | 5.3 | 12:00 |
| Apr | 59% | 60% | 5.7 | 12:30 |
| May | 72% | 80% | 5.5 | 12:54 |
| Jun | 81% | 88% | 5.2 | 13:07 |
| Jul | 85% | 89% | 4.8 | 13:01 |
| Aug | 88% | 92% | 4.5 | 12:41 |
| Sep | 86% | 85% | 4.7 | 12:12 |
| Oct | 83% | 57% | 5.0 | 11:44 |
| Nov | 79% | 42% | 4.9 | 11:20 |
| Dec | 73% | 32% | 4.8 | 11:09 |
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 Savannakhet is like
The warmest month is April, with an average high of 37 °C98 °F and a low of 24 °C75 °F. The coldest is December, when highs average 28 °C83 °F and lows 16 °C61 °F. There is a clear seasonal cycle, with 8.1 °C14.6 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,227 mm48 in of precipitation per year. The wettest three-month stretch is July–September, which brings 58% of the annual total. Months with less than 20 mm0.8 in on average: November–February. The wettest month is August (259 mm10 in), the driest is January (4 mm0.1 in).
Relative humidity ranges from 57% in March to 88% in August. The clearest skies (lowest average cloud amount, 31%) are typical of January. Average wind speed near the ground ranges from 3 km/h (2 mph) in September to 5 km/h (3 mph) in February. Daylight lasts from about 11.1 hours in December to 13.1 hours in June.
Best time to visit Savannakhet
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December and January: average highs of 28 °C83 °F to 29 °C85 °F with 4 mm0.1 in to 6 mm0.2 in of precipitation per month.
The most challenging month is August, which is very wet (259 mm10 in) and humid (88% 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 Savannakhet
- Wetter months (May–September) — highs 3086 to 34 °C93 °F, lows 2373 to 24 °C76 °F, about 205 mm8.1 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 (October–April) — highs 2883 to 37 °C98 °F, lows 1560 to 24 °C75 °F, about 29 mm1.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Savannakhet compares
Compared with Đồng Hới, about 222 km to the northeast, Savannakhet is on average 0.4 °C0.7 °F warmer and receives 36% less precipitation (1,227 mm48 in vs 1,928 mm76 in). The difference is largest in March (5 °C9 °F warmer).
Places in other countries with the most similar temperature and rainfall pattern: Udon Thani (Thailand, Aw), Khon Kaen (Thailand, Aw) and Nakhon Ratchasima (Thailand, Aw).
Nearby places
- Ubon Ratchathani 148 km · 27 °C81 °F · 1,523 mm60 in
- Khon Kaen 206 km · 27 °C80 °F · 1,364 mm54 in
- Ba Đồn 220 km · 26 °C78 °F · 1,851 mm73 in
- Đồng Hới 222 km · 26 °C79 °F · 1,928 mm76 in
- Udon Thani 230 km · 26 °C79 °F · 1,323 mm52 in
- Kỳ Anh 233 km · 26 °C78 °F · 1,851 mm73 in
- Ðông Hà 251 km · 26 °C78 °F · 2,132 mm84 in
- Vinh 254 km · 25 °C78 °F · 1,774 mm70 in
Frequently asked questions
What is the warmest month in Savannakhet?
April is the warmest month in Savannakhet, with an average high of 37 °C (98 °F) and an average low of 24 °C (75 °F).
What is the coldest month in Savannakhet?
December is the coldest month, with an average high of 28 °C (83 °F) and an average low of 16 °C (61 °F).
When does it rain the most in Savannakhet?
August is the wettest month with about 259 mm (10.2 in) of precipitation; January is the driest with about 4 mm (0.1 in).
What is the best time to visit Savannakhet?
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.