5-day weather forecast Riga Sep 18, 2026
19°Weather forecast Riga Friday Sep 18, 2026: overcast, temperature from 11 °C to 19 °C.
Precipitation probability 36%. Wind up to 6.11 m/s (gusts 13.11 m/s). Air humidity 51–86%, atmospheric pressure 757–758 mm Hg, UV index up to 2.2.
Weather Alerts
Dzeltenais vēja brīdinājums
16.09.2026. laika posmā no plkst. 12:00 līdz plkst. 16:00 dienvidu, dienvidrietumu vējš pastiprināsies brāzmās līdz 15-16 m/s. Viļņu augstums 1.0-1.5 m.
5 days at a glance — tap a day to open it
Sunrise 07:00
Sunset 19:34
Sunset 19:34
First Quarter53% illuminated
Moonrise 17:02 · Moonset 21:49
Moonrise 17:02 · Moonset 21:49
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 11 °C | 22% (0.01 mm/hr) | 100% | 74% | 757 mm Hg | SW 215° 5.11 (10.11) m/s | 0 |
| 01:00 | Patchy rain possible | 12 °C | 20% (0.02 mm/hr) | 100% | 71% | 757 mm Hg | SW 217° 5.5 (11.61) m/s | 0 |
| 02:00 | Patchy rain possible | 12 °C | 17% (0.01 mm/hr) | 79% | 73% | 757 mm Hg | SW 223° 5.89 (12.31) m/s | 0 |
| 03:00 | Patchy rain possible | 11 °C | 20% (0.01 mm/hr) | 73% | 81% | 757 mm Hg | SW 221° 5.39 (11.69) m/s | 0 |
| 04:00 |  Overcast | 11 °C | 27% | 100% | 85% | 757 mm Hg | SSW 212° 5 (11.33) m/s | 0 |
| 05:00 | Overcast | 11 °C | 27% | 100% | 85% | 757 mm Hg | SSW 206° 5 (12.03) m/s | 0 |
| 06:00 | Overcast | 11 °C | 27% | 100% | 86% | 758 mm Hg | SSW 199° 5.31 (12.42) m/s | 0 |
| 07:00 | Overcast | 11 °C | 28% | 100% | 86% | 758 mm Hg | SSW 199° 5.5 (12.44) m/s | 0 |
| 08:00 | Overcast | 11 °C | 27% | 100% | 85% | 758 mm Hg | SSW 198° 5.69 (13.11) m/s | 0.1 |
| 09:00 | Overcast | 12 °C | 24% | 100% | 80% | 758 mm Hg | SSW 199° 5.81 (13.03) m/s | 0.3 |
| 10:00 | Overcast | 14 °C | 20% | 100% | 73% | 758 mm Hg | SSW 201° 5.89 (12.39) m/s | 0.8 |
| 11:00 | Overcast | 16 °C | 16% | 93% | 67% | 758 mm Hg | SSW 202° 6 (11.11) m/s | 1.4 |
| 12:00 | Overcast | 17 °C | 14% | 96% | 59% | 758 mm Hg | SSW 209° 6.11 (9.22) m/s | 1.9 |
| 13:00 | Overcast | 18 °C | 13% | 100% | 55% | 758 mm Hg | SSW 207° 5.81 (8.89) m/s | 2.1 |
| 14:00 | Overcast | 19 °C | 12% | 100% | 51% | 758 mm Hg | SSW 208° 5.89 (8.92) m/s | 2.2 |
| 15:00 | Overcast | 19 °C | 12% | 100% | 52% | 758 mm Hg | SSW 203° 5.81 (9.31) m/s | 1.7 |
| 16:00 |  Patchy rain possible | 19 °C | 13% (0.01 mm/hr) | 100% | 52% | 758 mm Hg | SSW 210° 6.11 (9.83) m/s | 1.2 |
| 17:00 | Overcast | 17 °C | 14% | 100% | 58% | 758 mm Hg | SSW 206° 5.39 (10.11) m/s | 0.5 |
| 18:00 | Overcast | 16 °C | 15% | 100% | 62% | 758 mm Hg | SSW 197° 5.31 (11.31) m/s | 0.2 |
| 19:00 | Overcast | 16 °C | 16% | 100% | 65% | 758 mm Hg | SSW 197° 5.89 (11.03) m/s | 0 |
| 20:00 | Patchy rain possible | 15 °C | 20% (0.01 mm/hr) | 100% | 71% | 758 mm Hg | SSW 195° 5.61 (11) m/s | 0 |
| 21:00 | Patchy rain possible | 15 °C | 23% (0.03 mm/hr) | 100% | 74% | 758 mm Hg | S 187° 5.5 (11.89) m/s | 0 |
| 22:00 |  Light rain shower | 15 °C | 36% (0.21 mm/hr) | 100% | 76% | 758 mm Hg | S 185° 5.31 (11.5) m/s | 0 |
| 23:00 | Patchy rain possible | 14 °C | 24% (0.04 mm/hr) | 100% | 75% | 758 mm Hg | S 183° 5.69 (11.92) m/s | 0 |
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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.