5-day weather forecast Reykjavík Sep 27, 2026

5° · Patchy rain possible

Weather forecast Reykjavík Sunday Sep 27, 2026: patchy rain possible, temperature from 4 °C to 5 °C.

Precipitation probability 82%. Wind up to 9.31 m/s (gusts 11.03 m/s). Air humidity 77–96%, atmospheric pressure 741–746 mm Hg, UV index up to 0.5.

5 days at a glance — tap a day to open it
Sunrise 07:25
Sunset 19:11
Waning Gibbous96% illuminated
Moonrise 18:31 · Moonset 08:54
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Table

Forecast from 4 °C to 5 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)444444444444554444554444
Precipitation (mm/hr)000000000.010.470.140.020.140.440.420.642.231.070.560.270.140.110.060.04

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)10010010055100100100100100100100100100100100100100100100100100100100
Rain chance (%)242424101024232324564130385558678275644943433938

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)99.199.119.199.319.198.317.696.816.6166.115.815.55.55.115.315.55.56.116.56.896.896.89
Wind gust (m/s)9.8110.0310.2210.5310.7211.0310.229.58.58.397.837.536.6165.838.1110.3110.55.536.116.57.117.337.42
Wind direction (°)NNE 27°NNE 24°NNE 27°NNE 25°NNE 28°NNE 29°NNE 30°NNE 30°NE 35°NNE 30°NNE 29°NNE 30°NNE 33°NE 36°NNE 32°NNE 30°NNE 31°NE 36°NE 38°NNE 33°NNE 29°NNE 25°NNE 27°NNE 29°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)797979797980797877848887848591929392909092939596

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)746745744743743743743743743742742742742742741741741741741741741741741741

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index00000000000.10.20.40.50.50.40.20.10.100000

Air quality & pollen

Air quality is available for the first three days only.

Reykjavík 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.