Climate averages 1991–2020
Riga weather
in August.
A mild, moderately wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Riga: daytime highs average 21.6°C and nights cool to about 14.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 79 mm of rain on roughly 13 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 13 min on an average August day.
The nearest other city in this atlas is Šiauliai (123 km away). In August its highs average 21.3°C, about as warm as Riga, with 69 mm of rain.
Among the 2 cities listed in Latvia, Riga ranks 1st of 2 for the warmest August highs and 2nd of 2 for the driest August (rainfall, lowest first). The mean August high of those 2 cities is 21.5°C; Riga is 0.1°C warmer than that mean.
From August to September, average highs fall by 5.0°C to 16.6°C, and monthly rainfall falls from 79 mm to 70 mm.
The annual picture
August in context
Monthly precipitation
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
Riga climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.8°C-4.9°C | -4.9°C | 46 | 11.2 | 7.57 h |
| February | -0.4°C-5.3°C | -5.3°C | 39 | 9.9 | 9.49 h |
| March | 3.9°C-2.7°C | -2.7°C | 38 | 9.7 | 11.812 h |
| April | 10.8°C2.3°C | 2.3°C | 41 | 9.2 | 14.214 h |
| May | 16.4°C7.8°C | 7.8°C | 52 | 10.3 | 16.516 h |
| June | 20.0°C12.2°C | 12.2°C | 73 | 11.3 | 17.718 h |
| July | 22.4°C15.0°C | 15.0°C | 70 | 11.7 | 17.217 h |
| August, selected | 21.6°C14.5°C | 14.5°C | 79 | 13.0 | 15.215 h |
| September | 16.6°C10.5°C | 10.5°C | 70 | 11.6 | 12.913 h |
| October | 10.0°C5.3°C | 5.3°C | 80 | 14.2 | 10.410 h |
| November | 4.4°C1.0°C | 1.0°C | 59 | 12.8 | 8.28 h |
| December | 0.8°C-2.6°C | -2.6°C | 49 | 12.0 | 6.97 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
August in nearby cities
- Šiauliai in AugustLithuania · 123 kmHigh 21.3°C · Low 13.2°C · 69 mm rain
- Panevėžys in AugustLithuania · 136 kmHigh 22.0°C · Low 14.1°C · 71 mm rain
- Daugavpils in AugustLatvia · 190 kmHigh 21.4°C · Low 13.9°C · 77 mm rain
- Tartu in AugustEstonia · 223 kmHigh 20.6°C · Low 13.5°C · 75 mm rain
- Kaunas in AugustLithuania · 228 kmHigh 22.0°C · Low 13.9°C · 78 mm rain
- Klaipėda in AugustLithuania · 229 kmHigh 21.0°C · Low 15.3°C · 79 mm rain
- Vilnius in AugustLithuania · 261 kmHigh 22.0°C · Low 14.2°C · 79 mm rain
- Pskov in AugustRussia · 271 kmHigh 20.9°C · Low 14.0°C · 78 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 Riga) is explained once on the Riga year overview and on the Sources, method and limits page.