Riga, Latvia is most comfortable in April, May, September. The toughest month for heat is January (comfort 82/100). In August, daytime highs average 22.1°C (feels like 21.9°C) with 1 days over 30°C and 0.6 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 0.6° | -3.6° | -3.9° | 0 | 0 | 0 | 82 |
| February | 1.1° | -3.8° | -3.3° | 0 | 0 | 0 | 83 |
| March | 6.6° | -0.9° | 2.4° | 0 | 0 | 0 | 96 |
| April | 11.2° | 2.8° | 7.5° | 0 | 0 | 0 | 100 |
| May | 16.4° | 6.8° | 13.9° | 0 | 0 | 0 | 100 |
| June | 21.8° | 12.8° | 21.4° | 1.4 | 0 | 0.6 | 98 |
| July | 23.6° | 15.4° | 23.6° | 2 | 0 | 1.2 | 97 |
| August | 22.1° | 14.3° | 21.9° | 1 | 0 | 0.6 | 98 |
| September | 18.2° | 10.7° | 16.6° | 0 | 0 | 0 | 100 |
| October | 11.6° | 5.9° | 8.5° | 0 | 0 | 0 | 100 |
| November | 5.2° | 1.4° | 1.6° | 0 | 0 | 0 | 93 |
| December | 1.3° | -2.8° | -3° | 0 | 0 | 0 | 83 |
No. August daytime highs in Riga average a comfortable 22.1°C with 1 days over 30°C — it's a solid summer choice for avoiding extreme heat.
Based on 5 years of climate data, the most comfortable months in Riga are April, May, September. The toughest month for heat is January, scoring 82/100 on our heat-comfort index.
In August, nights in Riga average a low of 14.3°C, with 0.6 tropical nights per month (nights that stay at or above 20°C) — a key factor for sleep quality if your stay has no air conditioning.
Tell us where and when you're going. If a heatwave becomes likely for your dates, we'll email you early — with cooler day-by-day alternatives nearby.