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)	4.19	4.11	3.69	3.5	3.5	3.31	3.19	3.11	3.11	3.69	4.19	4.19	4	3.69	3.39	3.19	3	3.11	2.61	2.19	2.5	2.89	2.81	2.61
Wind gust (m/s)	10.31	10.83	10.61	10.5	10.03	10.03	9.89	9.11	9.22	9.03	8	6.5	5.83	5.31	4.92	4.72	4.5	4.69	5.22	3.11	4.42	7.11	6.94	5.75
Wind direction (°)	NW 317°	NW 320°	NW 318°	NW 314°	NW 315°	NW 314°	NW 315°	NW 316°	NW 317°	NW 319°	NW 322°	NW 323°	NW 322°	NW 319°	NW 316°	NW 314°	NW 313°	NW 306°	WNW 302°	WNW 292°	WNW 299°	NW 311°	NW 318°	NW 321°

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 (%)	92	86	82	83	84	85	86	88	84	76	67	60	55	52	50	50	49	51	56	67	74	78	81	82

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	759	759	760	760	761	761	761	761	762	762	763	763	763	763	763	763	764	764	764	764	764	765	765

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	0.1	0.4	0.8	1.3	1.7	2.2	2.2	1.9	1.3	0.8	0.3	0	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

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Mon, Sep 14, 2026

Tue, Sep 15 →

Helsinki 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.

Learn more about our methodology →