5-day weather forecast Grožnjan 11-08-2026

Weather forecast Grožnjan today 11.08.2026: sunny, temperature from 25 °C to 32 °C.

Precipitation probability 26%. Wind up to 5.81 m/s (gusts 11.42 m/s). Air humidity 46–68%, atmospheric pressure 761–763 mm Hg, UV index up to 7.4.

Weather Alerts

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SevereAug 10, 02:53 PM — Aug 12, 07:59 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 10, 09:03 AM — Aug 15, 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.

ModerateAug 10, 09:03 AM — Aug 11, 11:59 PMTranslate with Google

Moderate Thunderstorms Warning (Degree 2/4) - Slovenia / South-West

Moderate Thunderstorms Warning

Thunderstorms are possible, accompanied by local intense precipitation and gusty winds. Intense local showers with wind blasts and lightning strikes are possible. Torrential watercourses may rise quickly. Rainwater floods are possible.

Beware of approaching storm clouds. Do not linger in exposed locations, e.g. under trees or power lines. Wait in a safe place, as storms usually do not last long.

SevereAug 11, 08:00 AM — Aug 12, 07:59 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.

ModerateAug 11, 08:00 AM — Aug 11, 11:59 PMTranslate with Google

Moderate Thunderstorms Warning (Degree 2/4) - Slovenia / South-West

Moderate Thunderstorms Warning

Beware of approaching storm clouds. Do not linger in exposed locations, e.g. under trees or power lines. Wait in a safe place, as storms usually do not last long.

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

Sunrise 06:01
Sunset 20:19

New Moon1% illuminated
Moonrise 03:29 · Moonset 19:39

Chart

Table

Tue, Aug 11, 2026

Wed, Aug 12 →

Forecast from 25 °C to 32 °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)	25	25	25	25	25	25	25	25	27	29	31	31	32	31	31	31	32	32	32	31	28	29	26	25
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.22	0	0.04

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	3	2	2	3	4	5	5	7	10	9	10	14	16	21	15	6	7	10	10	0	11	78
Rain chance (%)	4	4	4	4	4	4	4	3	3	2	2	2	2	2	2	3	2	2	1	2	3	26	5	16

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)	2.31	1.5	1.69	2.61	2.69	2.39	2.31	2.39	2.11	1.61	1.69	3.11	3.69	4.19	4.19	2	0.61	0.81	1.11	3.69	2.61	4.11	5.81	4.5
Wind gust (m/s)	4.83	3.14	3.58	5.47	5.67	5.03	4.83	5.03	3.44	2.14	2.14	4.03	5.19	6.72	6.92	3.25	0.83	1.33	2.03	7	5.47	8.14	11.42	9.44
Wind direction (°)	NNE 23°	ENE 61°	NNE 15°	N 10°	NNE 22°	NE 37°	NNE 33°	NNE 26°	NNE 18°	NNE 12°	NNW 332°	NW 315°	WNW 296°	WNW 285°	W 275°	WNW 293°	ENE 67°	NNE 31°	WNW 302°	N 2°	W 259°	NW 319°	NE 54°	E 87°

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 (%)	65	62	62	63	63	62	60	60	55	51	48	50	49	49	49	52	50	48	46	47	58	58	68	68

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)	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	761	763	763

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	5.4	6.7	7.4	6.9	5.6	3.9	2.2	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)	11	11.5	11.3	10.6	11.4	10.3	9.3	9.5	9	8.8	8.5	8.4	8.3	8.2	8.1	7.7	7.9	8.2	8.5	9	8	9.7	7.7	7.4
PM10 (µg/m³)	15.5	15.4	15.5	16.1	15.9	13.1	12.7	12.4	11.8	11.3	11.5	11	10.9	11	11.4	11.6	11.8	11.9	12.1	12.1	12.4	12.3	11.5	12
Ozone (O₃) (µg/m³)	100	96	91	81	73	69	63	63	65	74	96	102	102	110	120	130	136	137	137	135	120	105	81	78
NO₂ (µg/m³)	4.5	5.1	5.4	4.5	4.6	4.1	4.5	5	4.4	2.4	1.8	1.4	1.4	1.2	1.1	1	1.1	1.3	1.8	2.1	2.9	2.8	2.7	3
SO₂ (µg/m³)	0.6	0.6	0.6	0.5	0.4	0.3	0.2	0.3	0.2	0.4	0.5	0.7	0.8	0.8	1	1.1	0.9	1	0.8	0.6	0.6	0.5	0.5	0.4
CO (µg/m³)	178	180	182	184	177	171	164	167	166	164	170	166	165	167	167	170	167	169	170	172	171	159	156	160

Tue, Aug 11, 2026

Wed, Aug 12 →

Frequently asked questions about the 5-day weather in Grožnjan

Over the next 5 days in Grožnjan the temperature is expected to range from about 23 to 32 °C. See the detailed hourly forecast for each of the 5 days in the charts above.

The chance of rain in Grožnjan over the next 5 days reaches 26%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.

A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.

Over the next 5 days the temperature in Grožnjan ranges from about 23 to 32 °C. Compare the warmest and coolest day on the temperature chart above.

Over the next 5 days the wind in Grožnjan picks up to 6 m/s. The windiest days are easy to spot on the wind chart above.

For a walk or a trip, pick the days with the lowest chance of rain (up to 26%) and light wind — easy to compare on the 5-day charts above.

The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.

Grožnjan 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 →