5-day weather forecast Helsinki 09-05-2026

Weather forecast Helsinki tomorrow 09.05.2026: sunny, temperature from 5 °C to 11 °C.

No precipitation expected. Wind up to 2.89 m/s (gusts 5.47 m/s). Air humidity 36–55%, atmospheric pressure 770–773 mm Hg, UV index up to 3.4.

Sunrise 04:56
Sunset 21:39

Last Quarter59% illuminated
Moonrise 03:43 · Moonset 10:43

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Table

← Fri, May 8

Sat, May 9, 2026

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Forecast from 5 °C to 11 °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	6	6	5	5	5	6	8	9	10	10	10	11	11	11	11	11	10	10	9	7	6	6
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	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 (%)	6	9	12	10	10	11	8	7	7	12	12	12	12	11	15	23	28	26	29	42	47	60	92	98
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	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)	1.81	1.81	1.69	2.11	2.11	1.19	1	1.11	1.39	1.69	1.89	2.19	2.61	2.5	2.11	2.39	2.81	2.89	2.81	2.81	2.39	2.5	2.5	2.61
Wind gust (m/s)	3.78	3.78	3.58	4.42	4.42	2.53	2.11	2.19	2.36	2.67	3.03	3.44	4.03	3.94	3.36	3.72	4.33	4.64	4.69	4.86	4.56	5.25	5.25	5.47
Wind direction (°)	W 267°	WNW 296°	NNW 332°	NNE 21°	NE 38°	NE 39°	NNE 29°	NE 51°	ENE 71°	ESE 115°	SE 138°	SSE 156°	SSE 167°	S 173°	SSE 165°	SSE 156°	SE 144°	SE 136°	SE 132°	SE 127°	SE 127°	SE 132°	SE 132°	SE 128°

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 (%)	48	46	45	45	48	50	50	47	42	40	40	39	39	40	39	36	36	38	40	42	47	50	52	55

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)	771	772	772	772	772	773	773	773	773	773	773	773	773	773	773	772	771	771	771	770	770	770	770	770

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	0.3	0.7	1.2	1.8	2.5	3.1	3.4	3.1	2.9	2.4	1.5	0.9	0.4	0.2	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)	3.2	3.5	3.7	3.7	4.2	4.5	4.9	5.6	4.8	4.7	4.4	4.7	4.4	4.1	4.5	4	3.4	3.2	3.5	3.3	3.3	3.4	3.4	3.3
PM10 (µg/m³)	5.3	5.3	5.3	5.8	6	6.8	8.5	7.4	6.7	6.3	6.5	6.4	6.3	5.8	5.6	5.6	5.1	5.2	4.7	4.5	4.6	4.8	4.8	4.5
Ozone (O₃) (µg/m³)	75	70	68	63	56	55	50	43	42	36	43	40	38	47	55	56	63	65	68	70	71	74	75	69
NO₂ (µg/m³)	9.3	10.6	12.1	13.2	13.2	16.5	16.3	17.6	14.3	17.8	13.9	12.4	10.6	11.1	10.6	11.9	12.7	12.4	12.5	12.4	11.9	9.9	8.7	11.2
SO₂ (µg/m³)	1.8	1.8	1.8	1.8	1.9	2.4	2.4	2.1	1.9	1.8	2.1	2.8	3	2.8	2.4	2.1	2	1.8	1.7	1.6	1.6	1.6	1.6	1.6
CO (µg/m³)	155.9	157.9	162.9	162.9	174.9	186.9	191.9	190.9	170.9	171.9	172.9	199.9	184.9	175.9	178.9	172.9	156.9	152.9	153.9	156.9	161.9	164.9	159.9	152.9

← Fri, May 8

Sat, May 9, 2026

Sun, May 10 →

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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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