5-day weather forecast Reykjavík 18-03-2026
Weather forecast Reykjavík tomorrow 18.03.2026: sunny, temperature from -1 °C to 4 °C.
Precipitation probability 61%. Wind up to 8.19 m/s (gusts 11.69 m/s). Air humidity 61–75%, atmospheric pressure 743–766 mm Hg, UV index up to 0.9.
Sunrise 07:35
Sunset 19:36
Sunset 19:36
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 0 °C | 0% | 29% | 73% | 743 mm Hg | N 351° 7.81 (10.39) m/s | 0 |
| 01:00 |  Clear | 0 °C | 0% | 16% | 73% | 745 mm Hg | N 349° 7.81 (10.53) m/s | 0 |
| 02:00 | Clear | 0 °C | 0% | 10% | 73% | 746 mm Hg | NNW 348° 7.81 (10.61) m/s | 0 |
| 03:00 | Clear | 0 °C | 0% | 8% | 71% | 748 mm Hg | N 352° 8.19 (11.17) m/s | 0 |
| 04:00 | Clear | 0 °C | 0% | 10% | 70% | 750 mm Hg | N 357° 7.81 (10.58) m/s | 0 |
| 05:00 | Clear | -1 °C | 0% | 11% | 69% | 752 mm Hg | N 352° 7.5 (10.28) m/s | 0 |
| 06:00 | Clear | -1 °C | 0% | 8% | 70% | 753 mm Hg | N 349° 7.69 (10.39) m/s | 0 |
| 07:00 | Clear | -1 °C | 0% | 5% | 71% | 755 mm Hg | N 352° 6.89 (9.44) m/s | 0 |
| 08:00 |  Sunny | -1 °C | 0% | 5% | 71% | 756 mm Hg | NNW 348° 6.31 (8.72) m/s | 0 |
| 09:00 | Sunny | -1 °C | 0% | 5% | 71% | 757 mm Hg | N 352° 5.31 (7.19) m/s | 0.2 |
| 10:00 | Sunny | 0 °C | 0% | 5% | 70% | 758 mm Hg | N 352° 5.11 (6.61) m/s | 0.4 |
| 11:00 | Sunny | 0 °C | 0% | 5% | 68% | 760 mm Hg | NNW 348° 4.39 (5.61) m/s | 0.6 |
| 12:00 | Sunny | 1 °C | 0% | 6% | 66% | 761 mm Hg | NNW 337° 4.5 (5.64) m/s | 0.8 |
| 13:00 | Sunny | 1 °C | 0% | 7% | 64% | 762 mm Hg | NNW 340° 4 (4.97) m/s | 0.9 |
| 14:00 | Sunny | 1 °C | 0% | 5% | 61% | 762 mm Hg | NNW 339° 2.5 (3.14) m/s | 0.9 |
| 15:00 | Sunny | 2 °C | 0% | 13% | 61% | 764 mm Hg | WNW 291° 2 (2.56) m/s | 0.7 |
| 16:00 |  Overcast | 2 °C | 0% | 100% | 62% | 764 mm Hg | W 278° 2.39 (3.11) m/s | 0.5 |
| 17:00 | Overcast | 2 °C | 0% | 100% | 64% | 764 mm Hg | S 186° 0.69 (0.92) m/s | 0.3 |
| 18:00 |  Cloudy | 2 °C | 0% | 72% | 68% | 765 mm Hg | S 189° 1.5 (2.11) m/s | 0.1 |
| 19:00 |  Partly cloudy | 2 °C | 0% | 43% | 71% | 765 mm Hg | SSE 160° 3.11 (4.61) m/s | 0 |
| 20:00 |  Overcast | 2 °C | 0% | 89% | 74% | 766 mm Hg | SE 142° 4.39 (7.22) m/s | 0 |
| 21:00 |  Light snow | 2 °C | 61% (0.02 mm/hr) | 89% | 75% | 765 mm Hg | SE 142° 5.19 (8.72) m/s | 0 |
| 22:00 | Overcast | 3 °C | 0% | 100% | 74% | 764 mm Hg | SSE 161° 6.39 (10.03) m/s | 0 |
| 23:00 | Overcast | 4 °C | 0% | 100% | 73% | 764 mm Hg | SSE 165° 7.5 (11.69) m/s | 0 |
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.