5-day weather forecast Reykjavík 19-04-2026

Weather forecast Reykjavík tomorrow 19.04.2026: patchy rain possible, temperature from 3 °C to 8 °C.

Precipitation probability 78%. Wind up to 13.5 m/s (gusts 19.25 m/s). Air humidity 64–83%, atmospheric pressure 762–768 mm Hg, UV index up to 1.2.

Sunrise 05:42
Sunset 21:14

Waxing Crescent3% illuminated
Moonrise 04:48 · Moonset 00:37

Chart

Table

← Sat, Apr 18

Sun, Apr 19, 2026

Mon, Apr 20 →

Forecast from 3 °C to 8 °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)	3	4	4	4	4	4	4	4	4	5	5	6	6	7	7	8	8	8	8	8	8	7	8	8
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0.01	0.01	0.02	0.01	0.02	0.01	0.01	0.02	0.02	0.01	0.01	0	0.01	0.01	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 (%)	13	14	31	52	52	78	94	64	85	100	100	100	100	100	100	100	99	86	100	85	56	76	64	57
Rain chance (%)	0	0	0	0	0	0	0	0	78	71	80	87	71	81	66	62	85	73	88	0	66	73	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)	5	5.61	6.31	6.89	7.61	8	8.61	9.31	9.81	10.61	11	11.39	11.39	12	13.39	13.5	13.19	13	12.31	11.61	11.11	10.89	11.11	11.31
Wind gust (m/s)	7.53	8.25	9.14	9.89	10.89	11.5	12.25	13.08	13.67	14.58	15.22	16	16.08	17.11	19.25	19.22	19.14	18.81	17.83	17.14	17.14	17.42	17.97	18.42
Wind direction (°)	ESE 112°	ESE 120°	ESE 117°	ESE 113°	ESE 107°	ESE 104°	ESE 104°	ESE 109°	ESE 111°	ESE 113°	ESE 115°	ESE 115°	ESE 116°	ESE 119°	SE 125°	SE 126°	SE 128°	SE 126°	SE 124°	ESE 123°	ESE 123°	SE 124°	SE 125°	SE 127°

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 (%)	64	65	67	67	68	70	71	72	72	72	74	76	76	78	81	82	82	82	82	83	83	82	82	80

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)	762	762	762	762	762	762	762	762	762	763	763	763	763	763	764	764	764	764	765	766	766	767	767	768

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	0.1	0.3	0.6	0.9	1.2	1.1	0.8	1	1.1	0.9	0.8	0.6	0.3	0.1	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)	5	4.8	4.6	4.5	4.5	4.4	4.3	4.3	4	4	3.9	4	3.9	3.8	3.9	3.9	4.2	4.2	4.1	4.2	4.2	4.2	4.1	4.1
PM10 (µg/m³)	10.3	9.4	9.4	9	8.7	8.6	8.3	8.1	8.2	8.4	8.4	8.2	8.2	8	8	8.4	8.7	9	9.3	9.5	9.7	9.6	9.3	9.3
Ozone (O₃) (µg/m³)	82	84	88	90	91	89	90	91	93	95	98	99	100	102	103	103	101	99	97	94	93	92	88	88
NO₂ (µg/m³)	4.1	3.6	3.1	2.8	2.7	2.5	2.4	2.2	2.2	2.1	2	2	2	2	2	2	2	2	2.1	2.1	2.1	2.1	2.1	2.1
SO₂ (µg/m³)	22.9	17.7	15.1	12.9	11.5	9.9	8.5	7.6	7.1	6	5.5	5.3	4.9	4.4	4	3.9	3.9	3.5	3.6	3.7	3.8	4	4.1	4.4
CO (µg/m³)	194.9	183.9	174.9	172.9	169.9	167.9	165.9	163.9	162.9	159.9	158.9	158.9	155.9	152.9	152.9	152.9	152.9	154.9	157.9	159.9	160.9	160.9	160.9	161.9

← Sat, Apr 18

Sun, Apr 19, 2026

Mon, Apr 20 →

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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