Climate averages 1991–2020
Sầm Sơn weather
in January.
A mild, moderately wet month: the coolest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Sầm Sơn: daytime highs average 19.8°C and nights cool to about 15.4°C. By daytime temperature it is the coolest month of the year.
Expect about 55 mm of rain on roughly 11 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 05 min on an average January day.
The nearest other city in this atlas is Thanh Hóa (16 km away). In January its highs average 20.2°C, about as warm as Sầm Sơn, with 26 mm of rain.
Among the 136 cities listed in Vietnam, Sầm Sơn ranks joint 100th of 136 for the warmest January highs and 106th of 136 for the driest January (rainfall, lowest first). The mean January high of those 136 cities is 24.8°C; Sầm Sơn is 5.0°C cooler than that mean.
From January to February, average highs rise by 1.3°C to 21.2°C, and monthly rainfall falls from 55 mm to 36 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sầm Sơn climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 19.8°C15.4°C | 15.4°C | 55 | 10.5 | 11.111 h |
| February | 21.2°C16.7°C | 16.7°C | 36 | 8.5 | 11.511 h |
| March | 23.8°C19.2°C | 19.2°C | 52 | 9.7 | 12.012 h |
| April | 27.3°C22.6°C | 22.6°C | 62 | 7.5 | 12.613 h |
| May | 30.3°C25.5°C | 25.5°C | 139 | 12.2 | 13.113 h |
| June | 32.0°C27.5°C | 27.5°C | 146 | 11.0 | 13.313 h |
| July | 31.7°C27.4°C | 27.4°C | 212 | 12.7 | 13.213 h |
| August | 30.9°C26.5°C | 26.5°C | 312 | 20.1 | 12.813 h |
| September | 29.5°C25.2°C | 25.2°C | 368 | 20.1 | 12.312 h |
| October | 27.4°C22.9°C | 22.9°C | 241 | 16.2 | 11.712 h |
| November | 24.7°C19.9°C | 19.9°C | 82 | 9.9 | 11.211 h |
| December | 21.1°C16.3°C | 16.3°C | 53 | 8.9 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Thanh Hóa in JanuaryVietnam · 16 kmHigh 20.2°C · Low 15.0°C · 26 mm rain
- Nghi Sơn in JanuaryVietnam · 46 kmHigh 20.0°C · Low 15.2°C · 23 mm rain
- Hoàng Mai in JanuaryVietnam · 55 kmHigh 20.7°C · Low 15.4°C · 23 mm rain
- Hoa Lư in JanuaryVietnam · 59 kmHigh 20.1°C · Low 14.0°C · 30 mm rain
- Nam Định in JanuaryVietnam · 83 kmHigh 20.2°C · Low 14.3°C · 27 mm rain
- Phủ Lý in JanuaryVietnam · 90 kmHigh 20.0°C · Low 13.8°C · 32 mm rain
- Hưng Yên in JanuaryVietnam · 103 kmHigh 20.1°C · Low 13.8°C · 33 mm rain
- Vinh in JanuaryVietnam · 120 kmHigh 20.6°C · Low 16.0°C · 30 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sầm Sơn) is explained once on the Sầm Sơn year overview and on the Sources, method and limits page.