Weather forecast Riga 18-08-2026
Weather forecast Riga Tuesday, August 18 18.08.2026: partly cloudy, temperature from 11 °C to 21 °C.
Precipitation probability 36%. Wind up to 3.81 m/s (gusts 5.86 m/s). Air humidity 44–91%, atmospheric pressure 752–755 mm Hg, UV index up to 4.
5 days at a glance — tap a day to open it
Sunrise 05:57
Sunset 20:57
Sunset 20:57
First Quarter37% illuminated
Moonrise 14:07 · Moonset 21:48
Moonrise 14:07 · Moonset 21:48
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 14 °C | 13% | 11% | 87% | 755 mm Hg | SSW 199° 1.61 (3.22) m/s | 0 |
| 01:00 | Clear | 13 °C | 15% | 16% | 90% | 755 mm Hg | SSW 205° 2.11 (4.14) m/s | 0 |
| 02:00 | Clear | 13 °C | 16% | 23% | 91% | 755 mm Hg | SSW 211° 2 (3.97) m/s | 0 |
| 03:00 |  Partly cloudy | 13 °C | 16% | 27% | 89% | 755 mm Hg | SW 215° 2 (3.86) m/s | 0 |
| 04:00 | Partly cloudy | 12 °C | 15% | 26% | 89% | 755 mm Hg | SW 219° 1.89 (3.67) m/s | 0 |
| 05:00 | Partly cloudy | 12 °C | 16% | 32% | 88% | 755 mm Hg | SW 214° 2.31 (4.39) m/s | 0 |
| 06:00 |  Partly cloudy | 11 °C | 16% | 32% | 90% | 755 mm Hg | SW 219° 2 (3.92) m/s | 0 |
| 07:00 | Partly cloudy | 12 °C | 20% | 57% | 88% | 755 mm Hg | SSW 211° 2 (3.58) m/s | 0.1 |
| 08:00 |  Cloudy | 13 °C | 18% | 65% | 83% | 755 mm Hg | SSW 211° 2 (2.86) m/s | 0.2 |
| 09:00 | Partly cloudy | 15 °C | 13% | 50% | 78% | 755 mm Hg | SSW 206° 2.31 (2.89) m/s | 0.6 |
| 10:00 | Cloudy | 16 °C | 14% | 66% | 74% | 755 mm Hg | SSW 203° 2.11 (2.69) m/s | 1.2 |
| 11:00 |  Patchy rain possible | 18 °C | 12% (0.01 mm/hr) | 81% | 62% | 754 mm Hg | SSW 206° 2.39 (2.75) m/s | 1.8 |
| 12:00 |  Light rain shower | 19 °C | 36% (0.33 mm/hr) | 66% | 57% | 754 mm Hg | SW 215° 2.61 (3.03) m/s | 1.8 |
| 13:00 | Patchy rain possible | 20 °C | 17% (0.07 mm/hr) | 83% | 52% | 754 mm Hg | SW 215° 2.19 (2.64) m/s | 2 |
| 14:00 |  Overcast | 21 °C | 9% | 90% | 44% | 753 mm Hg | SW 227° 2.11 (2.53) m/s | 1.8 |
| 15:00 | Cloudy | 20 °C | 9% | 83% | 50% | 753 mm Hg | SW 234° 3.81 (4.97) m/s | 1.8 |
| 16:00 | Patchy rain possible | 20 °C | 8% (0.02 mm/hr) | 60% | 54% | 753 mm Hg | SW 234° 3.5 (4.86) m/s | 4 |
| 17:00 |  Patchy light drizzle | 20 °C | 18% (0.17 mm/hr) | 62% | 55% | 752 mm Hg | WSW 251° 3.19 (4.39) m/s | 4 |
| 18:00 | Patchy rain possible | 19 °C | 17% (0.08 mm/hr) | 52% | 63% | 752 mm Hg | WSW 241° 2.39 (4.03) m/s | 4 |
| 19:00 | Patchy rain possible | 18 °C | 15% (0.02 mm/hr) | 87% | 66% | 752 mm Hg | SW 223° 2.11 (3.67) m/s | 4 |
| 20:00 | Patchy rain possible | 17 °C | 17% (0.02 mm/hr) | 88% | 69% | 752 mm Hg | SSW 211° 2.31 (4.06) m/s | 4 |
| 21:00 |  Patchy rain possible | 16 °C | 29% (0.17 mm/hr) | 83% | 74% | 753 mm Hg | SW 215° 2.81 (5.58) m/s | 0 |
| 22:00 | Partly cloudy | 14 °C | 15% | 46% | 83% | 753 mm Hg | SW 230° 2.61 (5.47) m/s | 0 |
| 23:00 | Partly cloudy | 14 °C | 13% | 29% | 83% | 753 mm Hg | WSW 255° 2.81 (5.86) m/s | 0 |
Riga on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.