5-day weather forecast Reykjavík 31-05-2026

Weather forecast Reykjavík Sunday, May 31 31.05.2026: patchy rain possible, temperature from 7 °C to 9 °C.

Precipitation probability 64%. Wind up to 4 m/s (gusts 5.56 m/s). Air humidity 80–88%, atmospheric pressure 755–758 mm Hg, UV index up to 3.6.

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Snjókoma, einkum austantil á svæðinu

Veðurviðvörun: Snjókoma

Norðaustan 8-15 m/s slydda eða snjókoma, einkum austantil á svæðinu. Varasamt ferðaveður.

Sunrise 03:24
Sunset 23:26

Full Moon99% illuminated
Moonrise Does not rise today · Moonset Does not set today

Chart

Table

← Sat, May 30

Sun, May 31, 2026

Mon, Jun 1 →

Forecast from 7 °C to 9 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	7	7	7	7	7	7	7	7	7	7	7	7	7	7	8	8	9	9	9	9	9	9	9	8
Precipitation (mm/hr)	0.04	0.01	0.01	0.02	0.04	0.03	0.04	0.06	0.12	0.13	0.12	0.12	0.06	0.04	0.01	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	91	74	50	34	42	50	56	39	41
Rain chance (%)	64	72	67	82	64	70	81	100	100	100	100	100	100	60	82	0	0	0	0	0	0	0	0	0

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	1.89	1.81	2	2.11	2	2.19	1.89	1.61	1.39	1.19	0.89	1.19	1.61	1.61	2	2.11	2.19	2.5	3.11	4	3.89	3.39	2.39	1.39
Wind gust (m/s)	2.72	2.64	3.03	3.11	2.97	3.25	2.83	2.31	1.97	1.67	1.25	1.64	2.17	2.11	2.61	2.69	2.86	3.28	4.22	5.56	5.56	5.03	3.83	2.39
Wind direction (°)	NE 50°	NE 44°	NNE 32°	NNE 29°	NNE 32°	NE 37°	NE 37°	NNE 24°	NNE 15°	N 10°	N 353°	NNW 330°	NNW 333°	NNW 336°	NNW 339°	NNW 337°	NNW 333°	NNW 331°	NW 326°	NW 324°	NW 319°	NW 315°	NNW 327°	NNE 15°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	86	85	84	84	84	84	84	84	85	86	86	87	88	87	85	83	81	80	80	81	82	83	85	86

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	758	758	758	758	758	758	758	758	758	758	758	758	758	758	758	758	757	757	756	756	756	756	755	755

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0.1	0.2	0.3	0.7	1.6	2.4	3.3	3.6	3.4	2.4	1.4	1.1	0.8	0.3	0.2	0.1	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	3.2	3.4	3.3	3	2.7	2.4	2.2	2.4	2.4	2.6	3	3	3	2.9	2.8	2.8	2.8	2.8	2.7	2.6	2.5	2.6	2.9	3.2
PM10 (µg/m³)	4.2	4.6	4.5	4.4	4.1	3.7	3.8	4	4.1	3.8	4.2	4.6	4.5	4.4	4	3.9	3.9	3.7	3.5	3.7	3.6	3.8	4.4	5
Ozone (O₃) (µg/m³)	58	53	48	47	46	45	47	50	54	57	56	54	56	59	61	64	64	67	66	65	62	59	57.8	60
NO₂ (µg/m³)	5.8	5.8	5.6	5.6	5.3	5	4.6	4.7	4.4	4.5	4.1	3.8	3.9	3	2.7	2.5	2.5	2.6	2.6	2.7	2.9	3.4	4.3	4
SO₂ (µg/m³)	4.7	5.1	4.9	3.6	3.4	3.1	2.8	2.5	2.5	2.9	3.8	5.2	4.9	4.6	3.5	2.8	2.6	2	1.8	1.9	1.6	1.9	5.7	10.5
CO (µg/m³)	141.9	141.9	140.9	130.9	130.9	141.9	138.9	131.9	130.9	132.9	137.9	134.9	127.9	122.9	121.9	122.9	121.9	121.9	119.9	118.9	118.9	119.9	122.1	126.4

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Sun, May 31, 2026

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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.

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