5-day weather forecast Reykjavík 19-08-2026

Weather forecast Reykjavík Wednesday, August 19 19.08.2026: partly cloudy, temperature from 10 °C to 13 °C.

Precipitation probability 24%. Wind up to 4.19 m/s (gusts 5.64 m/s). Air humidity 74–90%, atmospheric pressure 755–763 mm Hg, UV index up to 4.

Sunrise 05:31
Sunset 21:30
First Quarter48% illuminated
Moonrise 17:41 · Moonset 20:19
Chart
Table
Wed, Aug 19, 2026

Forecast from 10 °C to 13 °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)101010101010111111121213131313131212121211111111
Precipitation (mm/hr)00000000000000000.020.010.0200000

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 (%)212220543953595451505866781001001001001001009795929597
Rain chance (%)151515191719201815141415162122222423242222222324

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)1.111.391.812.312.692.892.812.692.612.52.191.691.191.311.892.312.112.312.893.313.814.193.693.31
Wind gust (m/s)1.782.312.943.724.284.474.173.813.53.282.862.221.561.692.532.7533.814.3955.645.114.5
Wind direction (°)S 180°SSE 158°SSE 149°SE 140°SE 130°ESE 121°ESE 116°ESE 116°ESE 119°SE 129°SE 136°SSE 148°S 173°SSW 212°SW 228°SW 214°SSW 206°SSW 195°S 181°S 176°S 172°SSE 168°SSE 163°SSE 158°

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 (%)909089888888888682797675747476777778787879798182

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)755755756756757757758758758758758759759760760761761761761762762763763763

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 Index000000444443333333333300
Wed, Aug 19, 2026

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.