5-day weather forecast Grožnjan Oct 13, 2026
19°Weather forecast Grožnjan tomorrow Oct 13, 2026: sunny, temperature from 13 °C to 19 °C.
Precipitation probability 11%. Wind up to 4.19 m/s (gusts 8.11 m/s). Air humidity 42–69%, atmospheric pressure 767–770 mm Hg, UV index up to 3.2.
Weather Alerts
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.
Moderate Wind Warning (Degree 2/4) - Slovenia / South-West
Moderate Wind Warning
Maximum wind speed : from 70 to 85 km/h. Wind sways trees and may break branches. It impedes road traffic of certain categories and may hinder movement to some extent. The sea is fairly rough (3).
Before the event:
Close all windows and doors. Stow or fasten anything that could be carried away by the wind. Check the situation of vessels in berths.
During the event:
Doors and windows should be kept closed. When moving in the open, pay attention to possible falling objects. Stop all work at heights. Do not repair damage during the event. We recommend additional caution in traffic, especially in crosswinds and in exposed areas (e.g. bridges, cuttings). Caution is recommended in water sports. Less skilled sailors should not sail out. Swimmers should stay close to the shore.
Yellow wind warning
Strong bura (NE wind) with gale force gusts.
STAY ALERT for debris carried by strong winds. Debris and tree branches carried by the wind may cause localised interruptions in outdoor activities.
5 days at a glance — tap a day to open it
Sunrise 07:18
Sunset 18:23
Sunset 18:23
Waxing Crescent11% illuminated
Moonrise 10:45 · Moonset 19:24
Moonrise 10:45 · Moonset 19:24
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 14 °C | 6% | 0% | 69% | 767 mm Hg | ENE 58° 4.19 (4.5) m/s | 0 |
| 01:00 | Clear | 14 °C | 5% | 0% | 68% | 767 mm Hg | NE 54° 4.11 (4.42) m/s | 0 |
| 02:00 | Clear | 14 °C | 5% | 0% | 67% | 767 mm Hg | ENE 62° 3.39 (3.42) m/s | 0 |
| 03:00 | Clear | 13 °C | 5% | 0% | 66% | 767 mm Hg | ENE 58° 3 (7) m/s | 0 |
| 04:00 | Clear | 13 °C | 5% | 0% | 66% | 767 mm Hg | ENE 58° 2.81 (6.81) m/s | 0 |
| 05:00 | Clear | 13 °C | 4% | 0% | 65% | 767 mm Hg | ENE 63° 3.11 (8.11) m/s | 0 |
| 06:00 | Clear | 13 °C | 4% | 0% | 63% | 767 mm Hg | ENE 72° 3.5 (6.5) m/s | 0 |
| 07:00 | Clear | 13 °C | 4% | 0% | 61% | 767 mm Hg | ENE 72° 3.61 (3.81) m/s | 0 |
| 08:00 | Sunny | 13 °C | 4% | 0% | 60% | 768 mm Hg | E 80° 3.19 (3.31) m/s | 0 |
| 09:00 | Sunny | 14 °C | 3% | 2% | 58% | 768 mm Hg | ENE 61° 2.19 (7.19) m/s | 0.4 |
| 10:00 | Sunny | 15 °C | 3% | 5% | 56% | 768 mm Hg | NE 34° 1.69 (1.69) m/s | 1.1 |
| 11:00 | Sunny | 15 °C | 3% | 5% | 53% | 769 mm Hg | NNE 18° 1.5 (1.5) m/s | 2.1 |
| 12:00 |  Cloudy | 16 °C | 7% | 68% | 50% | 769 mm Hg | N 2° 1.5 (1.89) m/s | 2.9 |
| 13:00 |  Overcast | 17 °C | 11% | 99% | 47% | 769 mm Hg | N 358° 1.5 (2.5) m/s | 3.2 |
| 14:00 | Overcast | 18 °C | 10% | 100% | 44% | 768 mm Hg | N 358° 1.5 (2.81) m/s | 3 |
| 15:00 | Overcast | 18 °C | 10% | 99% | 42% | 768 mm Hg | N 5° 1.81 (3) m/s | 2.1 |
| 16:00 | Overcast | 19 °C | 10% | 100% | 42% | 767 mm Hg | N 358° 2.39 (3.22) m/s | 1.2 |
| 17:00 | Overcast | 19 °C | 10% | 100% | 44% | 768 mm Hg | N 359° 3.31 (4.11) m/s | 0.5 |
| 18:00 | Overcast | 18 °C | 11% | 100% | 45% | 768 mm Hg | NNE 15° 3 (3.81) m/s | 0 |
| 19:00 |  Cloudy | 18 °C | 9% | 85% | 48% | 769 mm Hg | NE 51° 2.69 (3.42) m/s | 0 |
| 20:00 |  Partly cloudy | 17 °C | 5% | 44% | 53% | 769 mm Hg | E 90° 2.69 (2.83) m/s | 0 |
| 21:00 | Clear | 17 °C | 3% | 5% | 53% | 770 mm Hg | ESE 107° 2.11 (6.11) m/s | 0 |
| 22:00 | Clear | 17 °C | 3% | 5% | 53% | 770 mm Hg | ESE 113° 1.89 (4.89) m/s | 0 |
| 23:00 | Clear | 17 °C | 2% | 0% | 54% | 770 mm Hg | ESE 102° 2 (6) 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.