5-day weather forecast Grožnjan 18-06-2026

Weather forecast Grožnjan Thursday, June 18 18.06.2026: sunny, temperature from 20 °C to 27 °C.

Precipitation probability 8%. Wind up to 3.81 m/s (gusts 6.08 m/s). Air humidity 54–77%, atmospheric pressure 763–765 mm Hg, UV index up to 8.7.

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ModerateJun 14, 04:09 AM — Jun 15, 07:59 PMTranslate with Google

Nevihte - zmerna ogroženost (Stopnja 2/4) - Slovenija / jugozahod

Nevihte - zmerna ogroženost

Možne so krajevne nevihte. Lokalno možni močnejši nalivi, piš vetra in udari strel. Hitro lahko narastejo hudourniški vodotoki.

Bodite pozorni na bližajoče se nevihtne oblake. Med nevihto se ne zadržujte na izpostavljenih mestih, počakajte na varnem mestu, nevihta običajno ne traja dolgo.

ModerateJun 14, 04:09 AM — Jun 15, 07:59 PMTranslate with Google

Nevihte - zmerna ogroženost (Stopnja 2/4) - Slovenija / morje

Nevihte - zmerna ogroženost

Lokalno možni močnejši nalivi, piš vetra in udari strel. Hitro se lahko spremeni veter in stanje morja.

Bodite pozorni na bližajoče se nevihtne oblake. Med nevihto se ne zadržujte na izpostavljenih mestih, počakajte na varnem mestu, nevihta običajno ne traja dolgo.

ModerateJun 15, 09:00 AM — Jun 15, 11:59 PMTranslate with Google

Yellow Thunderstorm Warning for Italy - Friuli Venezia Giulia

Yellow Thunderstorm Warning

Moderate intensity weather phenomena expected (DISCLAIMER: "Information provided on METEOALARM for Italy regard only the intensity and recurrence of the phenomena, further details can be found at www.meteoam.it. METEOALARM information do not provide the assessment of impact on the territory and they do not represent the Official Alerts messages that are issued by the National Civil Protection Service https://www.protezionecivile.gov.it")

BE AWARE, keep up to date with the latest weather forecast. Expect some minor disruption to outdoor activities

ModerateJun 14, 08:00 AM — Jun 14, 05:59 PMTranslate with Google

Yellow Thunderstorm Warning for Italy - Friuli Venezia Giulia

Yellow Thunderstorm Warning

BE AWARE, keep up to date with the latest weather forecast. Expect some minor disruption to outdoor activities

Sunrise 05:16
Sunset 20:56

Waxing Crescent19% illuminated
Moonrise 08:33 · Moonset 23:47

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← Wed, Jun 17

Thu, Jun 18, 2026

Forecast from 20 °C to 27 °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)	21	21	20	20	20	20	20	22	23	25	26	26	26	27	26	27	27	27	27	26	24	24	23	22
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	7	7	7	8	7	10	10	6	9	10	5	7	5	4	3	2	4	0	0	6	6	6	6
Rain chance (%)	8	8	8	7	8	8	8	8	6	5	4	4	3	3	4	2	2	3	2	3	6	6	6	7

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)	2.19	1.81	1.5	2.11	1.89	1.69	2.11	1.89	1	2.5	3.11	2.5	3.61	3.61	3.39	3.81	3.5	2.11	2.5	2.19	1.69	1.61	1.61	1.5
Wind gust (m/s)	4.61	3.78	3.14	4.42	4	3.58	4.42	3.75	1.53	3.61	4.42	3.31	5.64	5.69	4.83	6.08	5.75	3.03	4.56	4.39	3.58	3.39	3.31	3.14
Wind direction (°)	NE 52°	ENE 58°	ENE 60°	NE 36°	NNE 32°	NE 34°	NE 35°	NNE 21°	N 9°	NNW 338°	NW 323°	NW 305°	NW 317°	NW 309°	W 280°	WNW 298°	WNW 299°	WNW 285°	NW 314°	NNW 328°	NNE 17°	NNE 28°	NE 39°	NE 50°

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 (%)	76	77	77	74	76	77	76	75	70	67	64	62	58	56	62	54	54	60	54	60	69	70	71	72

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)	765	765	765	764	765	764	764	765	765	765	765	764	765	764	764	764	764	764	764	764	763	763	764	764

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	0.5	1.3	2.8	4.7	6.6	8.1	8.7	8.3	7	7	7	7	7	6	0	0	0

← Wed, Jun 17

Thu, Jun 18, 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.

Learn more about our methodology →