5-day weather forecast Riga Sep 18, 2026
15°Weather forecast Riga today Sep 18, 2026: patchy rain possible, temperature from 11 °C to 16 °C.
Precipitation probability 37%. Wind up to 6.5 m/s (gusts 12.81 m/s). Air humidity 66–94%, atmospheric pressure 757–758 mm Hg, UV index up to 1.1.
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
Fri, Sep 18, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 11 °C | 20% (0.01 mm/hr) | 70% | 83% | 757 mm Hg | SSW 213° 5 (11.11) m/s | 0 |
| 01:00 |  Cloudy | 11 °C | 23% | 82% | 85% | 757 mm Hg | SSW 212° 5.11 (10.81) m/s | 0 |
| 02:00 | Patchy rain possible | 11 °C | 29% (0.01 mm/hr) | 100% | 87% | 757 mm Hg | SSW 208° 4.89 (10) m/s | 0 |
| 03:00 | Patchy rain possible | 11 °C | 37% (0.1 mm/hr) | 100% | 86% | 757 mm Hg | SSW 205° 5.11 (10.5) m/s | 0 |
| 04:00 | Patchy rain possible | 11 °C | 36% (0.08 mm/hr) | 100% | 87% | 757 mm Hg | SSW 213° 5.39 (11.39) m/s | 0 |
| 05:00 |  Overcast | 11 °C | 30% | 100% | 90% | 757 mm Hg | SSW 209° 5.11 (11.22) m/s | 0 |
| 06:00 | Patchy rain possible | 11 °C | 34% (0.03 mm/hr) | 100% | 92% | 757 mm Hg | SSW 199° 4.89 (11.22) m/s | 0 |
| 07:00 | Overcast | 11 °C | 31% | 96% | 94% | 757 mm Hg | SSW 194° 5 (11.39) m/s | 0 |
| 08:00 | Patchy rain possible | 11 °C | 33% (0.02 mm/hr) | 100% | 93% | 757 mm Hg | S 189° 5.39 (12.11) m/s | 0.1 |
| 09:00 | Patchy rain possible | 12 °C | 34% (0.07 mm/hr) | 100% | 86% | 757 mm Hg | SSW 194° 5.39 (12.42) m/s | 0.3 |
| 10:00 | Patchy rain possible | 13 °C | 28% (0.03 mm/hr) | 100% | 82% | 757 mm Hg | S 188° 5.69 (12.81) m/s | 0.7 |
| 11:00 |  Overcast | 14 °C | 20% | 100% | 74% | 757 mm Hg | SSW 193° 6.11 (12.81) m/s | 0.4 |
| 12:00 | Patchy rain possible | 15 °C | 19% (0.01 mm/hr) | 100% | 70% | 758 mm Hg | SSW 202° 6.31 (12.69) m/s | 0.4 |
| 13:00 | Patchy rain possible | 14 °C | 21% (0.02 mm/hr) | 100% | 72% | 758 mm Hg | SSW 200° 5.69 (11.83) m/s | 0.8 |
| 14:00 | Patchy rain possible | 16 °C | 19% (0.02 mm/hr) | 100% | 68% | 758 mm Hg | S 190° 5.61 (11.14) m/s | 1.1 |
| 15:00 | Overcast | 16 °C | 17% | 100% | 68% | 757 mm Hg | S 189° 5.81 (11.89) m/s | 0.5 |
| 16:00 | Overcast | 16 °C | 17% | 100% | 66% | 757 mm Hg | S 189° 6.11 (12.33) m/s | 0.5 |
| 17:00 | Overcast | 16 °C | 17% | 100% | 66% | 757 mm Hg | SSW 196° 6.5 (11.92) m/s | 0.2 |
| 18:00 | Patchy rain possible | 16 °C | 27% (0.11 mm/hr) | 100% | 70% | 757 mm Hg | SSW 201° 6.19 (11.22) m/s | 0.2 |
| 19:00 | Patchy rain possible | 16 °C | 22% (0.03 mm/hr) | 100% | 73% | 757 mm Hg | SW 214° 5.5 (11.11) m/s | 0 |
| 20:00 | Overcast | 16 °C | 19% | 100% | 72% | 757 mm Hg | SSW 212° 5.19 (10.92) m/s | 0 |
| 21:00 | Overcast | 15 °C | 20% | 100% | 74% | 757 mm Hg | SSW 213° 5.89 (11.81) m/s | 0 |
| 22:00 | Patchy rain possible | 15 °C | 30% (0.08 mm/hr) | 100% | 77% | 757 mm Hg | SSW 213° 6.19 (11.72) m/s | 0 |
| 23:00 | Patchy rain possible | 14 °C | 25% (0.02 mm/hr) | 83% | 86% | 757 mm Hg | SSW 212° 6 (11.81) m/s | 0 |
Fri, Sep 18, 2026
Frequently asked questions about the 5-day weather in Riga
What will the weather be like in Riga over the next 5 days?
Over the next 5 days in Riga the temperature is expected to range from about 11 to 18 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Riga?
The chance of rain in Riga over the next 5 days reaches 89%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Riga?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Riga will be the warmest and which the coolest?
Over the next 5 days the temperature in Riga ranges from about 11 to 18 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Riga over the next 5 days?
Over the next 5 days the wind in Riga picks up to 8 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Riga is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 89%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Riga?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in Riga this week?
Rain reaches a 89% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 1.1; sunscreen is worth it from about 3 upwards.
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.