5-day weather forecast Grožnjan 14-08-2026

Weather forecast Grožnjan tomorrow 14.08.2026: sunny, temperature from 23 °C to 31 °C.

Precipitation probability 2%. Wind up to 4.39 m/s (gusts 6.5 m/s). Air humidity 30–52%, atmospheric pressure 761–764 mm Hg, UV index up to 7.5.

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SevereAug 13, 08:51 AM — Aug 14, 05:59 PMTranslate with Google

Severe High temperature Warning (Degree 3/4) - Slovenia / South-West

Severe High temperature Warning

High temperatures will affect the health of sensitive members of the population.

Stay in the shade at midday and in the afternoon, while intense physical effort is not recommended. Eat light food and drink enough liquids. Wear airy and light clothes. Drinking coffee, alcohol or very sweet drinks is not recommended. If you take medication for regulating blood pressure, consult your doctor. Air conditioning should be set to a temperature that is no more than 8 °C lower than the outside temperature. Domestic animals should have enough fresh water and shade. Living premises should be aired out at night and in the morning and sufficient air circulation should be ensured. We recommend shading premises externally. Vehicles parked in the sun should be aired out thoroughly before driving.

ExtremeAug 13, 08:51 AM — Aug 18, 12:59 AMTranslate with Google

Extreme Forestfire danger Warning (Degree 4/4) - Slovenia / South-West

Extreme Forestfire danger Warning

There is an extreme risk of forest and bush fire.

Stay very vigilant. Be ready to take action to protect yourself from a rapidly developing fire. The public are asked to exercise extreme caution in the countryside, and immediately notify emergency services on any fire.

5 days at a glance — tap a day to open it

Sunrise 06:05
Sunset 20:14

Waxing Crescent5% illuminated
Moonrise 07:48 · Moonset 20:57

Chart

Table

← Thu, Aug 13

Fri, Aug 14, 2026

Sat, Aug 15 →

Forecast from 23 °C to 31 °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)	24	24	24	23	23	23	23	23	25	28	29	30	30	31	31	31	30	30	30	28	26	25	25	24
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 (%)	4	4	5	6	6	7	7	7	7	7	6	6	5	4	3	0	0	0	0	0	0	0	0	1
Rain chance (%)	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	1	1

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)	2.69	3	3.11	3.11	2.5	2.31	2.31	2.39	2.11	1.31	1.31	1.89	2.5	3	3.69	4.39	4.11	3.5	3	2.19	1.11	0.69	1.89	2.5
Wind gust (m/s)	5.67	6.31	6.5	6.5	5.25	4.83	4.83	5.03	3.61	1.69	1.56	2.22	2.89	3.58	4.58	5.61	5.33	4.86	4.53	4.06	2.31	1.47	4	5.25
Wind direction (°)	ENE 62°	ENE 72°	ENE 69°	ENE 60°	NE 51°	NE 53°	ENE 59°	ENE 67°	ENE 69°	NE 48°	N 1°	NW 320°	WNW 302°	WNW 282°	W 267°	WSW 248°	SW 229°	SW 217°	SSW 205°	SSW 197°	SSW 206°	E 91°	ENE 74°	ENE 62°

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 (%)	52	50	47	44	42	41	39	39	35	30	30	30	32	35	36	38	40	39	39	44	48	51	47	44

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)	764	764	764	764	764	764	764	764	764	764	764	764	764	763	763	762	762	761	761	761	761	761	762	762

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	0.2	0.8	2	3.6	5.5	6.9	7.5	7.1	5.8	4	2.3	1	0.3	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)	4.6	4.8	4.9	4.9	4.8	4.6	4.5	4.6	4.5	4.4	4.3	4.4	4.3	4.3	4.3	4.4	4.5	4.5	4.7	5.4	5.3	5	5.8	6.1
PM10 (µg/m³)	7.7	7.6	7.2	6.9	6.8	6.7	6.7	7.3	7.2	6.4	6.3	6.6	6.4	6.5	6.4	7.4	7.7	7.6	8	8.1	8.3	8.7	8.9	9.2
Ozone (O₃) (µg/m³)	78	70	67	60	58	55	55	60	67	76	85	87	94	101	110	113	110	115	117	118	112	97	86	74
NO₂ (µg/m³)	2.6	2.8	2.7	2.3	2.3	2.5	2.8	3	2.8	2	1.4	1.1	0.9	0.9	0.9	1	1	1.1	1.2	1.5	2.5	2.8	3.4	3.9
SO₂ (µg/m³)	0.5	0.4	0.4	0.3	0.3	0.3	0.3	0.3	0.3	0.4	0.4	0.4	0.4	0.4	0.5	0.5	0.5	0.5	0.5	0.4	0.4	0.4	0.4	0.4
CO (µg/m³)	136	137	136	135	135	135	135	135	134	132	132	132	134	132	133	135	137	139	139	138	138	137	137	139

← Thu, Aug 13

Fri, Aug 14, 2026

Sat, Aug 15 →

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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 →