5-day weather forecast Grožnjan 12-08-2026
Weather forecast Grožnjan tomorrow 12.08.2026: sunny, temperature from 23 °C to 32 °C.
Precipitation probability 21%. Wind up to 4.61 m/s (gusts 7.78 m/s). Air humidity 44–70%, atmospheric pressure 763–764 mm Hg, UV index up to 7.3.
Weather Alerts
Hide alertsSevere 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.
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.
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.
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.
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.
5 days at a glance — tap a day to open it
Sunrise 06:02
Sunset 20:17
Sunset 20:17
New Moon0% illuminated
Moonrise 04:56 · Moonset 20:10
Moonrise 04:56 · Moonset 20:10
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 25 °C | 14% (0.02 mm/hr) | 76% | 67% | 763 mm Hg | ENE 72° 3.61 (7.56) m/s | 0 |
| 01:00 | Patchy rain possible | 24 °C | 17% (0.05 mm/hr) | 74% | 70% | 764 mm Hg | NE 48° 3.69 (7.78) m/s | 0 |
| 02:00 |  Clear | 24 °C | 6% | 7% | 69% | 763 mm Hg | NE 47° 3.31 (6.92) m/s | 0 |
| 03:00 | Clear | 23 °C | 5% | 9% | 67% | 763 mm Hg | NE 45° 2.61 (5.47) m/s | 0 |
| 04:00 | Patchy rain possible | 23 °C | 18% (0.05 mm/hr) | 80% | 69% | 763 mm Hg | NE 43° 2.69 (5.67) m/s | 0 |
| 05:00 | Clear | 23 °C | 6% | 13% | 68% | 763 mm Hg | NE 52° 1.89 (4) m/s | 0 |
| 06:00 | Patchy rain possible | 23 °C | 15% (0.05 mm/hr) | 71% | 67% | 764 mm Hg | ENE 61° 2.19 (4.61) m/s | 0 |
| 07:00 |  Sunny | 23 °C | 5% | 12% | 66% | 764 mm Hg | ENE 58° 2 (4.08) m/s | 0.2 |
| 08:00 | Sunny | 25 °C | 5% | 12% | 64% | 764 mm Hg | ENE 61° 1.61 (2.61) m/s | 0.8 |
| 09:00 | Sunny | 27 °C | 3% | 12% | 56% | 764 mm Hg | NE 44° 1.11 (1.42) m/s | 2 |
| 10:00 | Sunny | 29 °C | 2% | 15% | 51% | 764 mm Hg | N 6° 1 (1.14) m/s | 3.6 |
| 11:00 | Sunny | 30 °C | 2% | 17% | 48% | 764 mm Hg | NNW 336° 0.69 (0.81) m/s | 5.3 |
| 12:00 | Sunny | 31 °C | 2% | 16% | 46% | 764 mm Hg | NW 307° 0.89 (1.03) m/s | 6.7 |
| 13:00 | Sunny | 31 °C | 2% | 14% | 45% | 764 mm Hg | WNW 282° 1.69 (1.97) m/s | 7.3 |
| 14:00 | Sunny | 32 °C | 2% | 11% | 44% | 764 mm Hg | WSW 247° 2.81 (3.22) m/s | 6.9 |
| 15:00 | Sunny | 31 °C | 2% | 10% | 49% | 764 mm Hg | SW 222° 4 (5) m/s | 5.7 |
| 16:00 | Sunny | 30 °C | 3% | 10% | 53% | 764 mm Hg | SSW 206° 4.61 (5.78) m/s | 3.9 |
| 17:00 | Sunny | 30 °C | 3% | 9% | 55% | 764 mm Hg | SSW 203° 4.31 (5.81) m/s | 2.2 |
| 18:00 | Sunny | 30 °C | 3% | 6% | 55% | 764 mm Hg | SSW 209° 2.89 (4.14) m/s | 1 |
| 19:00 | Sunny | 29 °C | 3% | 5% | 57% | 764 mm Hg | SW 214° 1.19 (1.89) m/s | 0.3 |
| 20:00 | Sunny | 27 °C | 4% | 5% | 62% | 764 mm Hg | WSW 239° 0.31 (0.64) m/s | 0 |
| 21:00 | Clear | 26 °C | 4% | 5% | 61% | 764 mm Hg | NNE 20° 2.19 (4.61) m/s | 0 |
| 22:00 | Clear | 26 °C | 4% | 6% | 63% | 764 mm Hg | ENE 58° 2.11 (4.42) m/s | 0 |
| 23:00 | Patchy rain possible | 25 °C | 21% (0.17 mm/hr) | 80% | 62% | 764 mm Hg | ENE 68° 1.89 (4) m/s | 0 |
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.