5-day weather forecast Reykjavík 20-06-2026

Weather forecast Reykjavík tomorrow 20.06.2026: patchy rain possible, temperature from 9 °C to 12 °C.

Precipitation probability 28%. Wind up to 5 m/s (gusts 6.17 m/s). Air humidity 60–74%, atmospheric pressure 750–756 mm Hg.

Sunrise 02:55
Sunset 00:03

First Quarter38% illuminated
Moonrise 11:14 · Moonset 01:21

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Table

← Fri, Jun 19

Sat, Jun 20, 2026

Sun, Jun 21 →

Forecast from 9 °C to 12 °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)	10	10	9	9	9	9	9	9	9	10	10	11	11	11	11	11	12	12	11	11	11	10	10	9
Precipitation (mm/hr)	0.09	0.07	0.05	0.01	0.02	0.02	0	0	0	0	0.01	0.01	0.01	0.01	0	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	86	70	67	64	62	67	61	58	51	41	36	31	22	19	10	10	9	9	10
Rain chance (%)	28	26	24	20	20	18	14	13	12	11	11	10	9	8	7	6	6	5	5	4	4	5	5	6

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)	3	2.81	2.11	1.89	2.5	2.89	3.11	3.31	3.31	3	2.89	3.39	3.81	4.19	4.61	4.81	5	5	4.69	4.81	4.81	4.69	4.61	4.11
Wind gust (m/s)	4.08	3.78	2.75	2.47	3.25	3.75	3.94	4.17	4.08	3.64	3.53	4.17	4.75	5.22	5.61	5.92	6.14	6.17	5.83	5.97	6.06	5.97	5.97	5.5
Wind direction (°)	ENE 62°	ENE 62°	NE 54°	NE 35°	NNE 28°	NNE 28°	NNE 28°	NNE 26°	NNE 23°	NNE 20°	N 11°	N 4°	N 3°	N 1°	N 0°	N 354°	N 352°	N 356°	N 354°	N 359°	N 1°	N 1°	N 3°	N 4°

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 (%)	74	73	71	71	71	72	72	71	70	66	64	63	62	62	61	61	60	60	60	60	61	64	66	70

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)	750	750	750	750	750	750	751	751	751	751	752	752	752	752	752	752	753	753	754	754	755	755	756	756

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	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	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)	2	2.1	2.1	2.2	2	1.7	1.7	1.7	1.9	1.8	1.9	2	2	1.9	1.8	1.8	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.9
PM10 (µg/m³)	3.2	3.6	3.2	3.3	3.5	3.6	3.5	3.4	3.1	3.4	3.4	3.7	3.9	3.8	3.6	3.7	3.8	3.9	4.1	4.3	4.2	3.8	4	4.4
Ozone (O₃) (µg/m³)	55	54	51	51	48	48	45	46	48	52	54	56	59	61	67	68	67	66	66	66	66	65	63	60
NO₂ (µg/m³)	3.3	2.9	3	3	3.3	3.5	3.1	2.6	2	1.7	1.5	1.2	1	1.2	1	0.9	0.7	0.7	0.7	0.8	0.9	1.4	2	2.6
SO₂ (µg/m³)	7.7	10.5	11.6	10.8	9.5	8	5.7	4.5	3.6	2.3	2.3	2.3	2.1	1.4	0.9	0.5	0.5	0.5	0.5	0.4	0.4	0.9	1.9	2.7
CO (µg/m³)	125	124	124	119	118	119	116	114	113	109	107	104	103	103	101	101	101	101	102	103	103	103	104	104

← Fri, Jun 19

Sat, Jun 20, 2026

Sun, Jun 21 →

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.

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