Koper
April
Weather in Koper for April 2026
Your guide to Koper weather in April - trends and predictions
In general, the average temperature in Koper at the beginning of April is 15.6 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.1 °C by the end of April.
Koper experiences moderate rainfall in April, with an average of 7 rainy days and a total precipitation of 186.6 mm.
Temperatures
Rain 🌧️
23
Dry days
7
Rainy days
0
Snow days
20°/6°
Temperatures
15 km/h
Avg max wind
72 %
Avg humidity
Koper Weather April
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2  16° | 3  15° | 4  17° | 5 17° | ||
| 6  15° | 7  15° | 8  18° | 9 18° | 10 18° | 11 19° | 12 22° |
| 13 22° | 14 18° | 15 18° | 16 20° | 17 17° | 18 13° | 19 15° |
| 20 15° | 21 17° | 22  17° | 23 16° | 24 15° | 25 12° | 26 13° |
| 27 19° | 28 21° | 29 23° | 30 24° |
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Temperatures trend during April in Koper
See the weather trend as well as the moving average line
April weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Apr. | Moderate or heavy rain shower | 14° /7° | 9.9 mm | 4 | |
| 2 Apr. | Patchy light rain with thunder | 16° /7° | 2.8 mm | 4 | |
| 3 Apr. | Patchy light drizzle | 15° /6° | 0.9 mm | 4 | |
| 4 Apr. | Patchy rain possible | 17° /7° | 0.1 mm | 5 | |
| 5 Apr. | Patchy rain possible | 17° /7° | 0.4 mm | 5 | |
| 6 Apr. | Partly cloudy | 15° /6° | 0.1 mm | 4 | |
| 7 Apr. | Sunny | 15° /5° | 0 mm | 5 | |
| 8 Apr. | Overcast | 18° /7° | 0 mm | 5 | |
| 9 Apr. | Overcast | 18° /7° | 0 mm | 5 | |
| 10 Apr. | Overcast | 18° /7° | 0 mm | 5 | |
| 11 Apr. | Partly cloudy | 19° /8° | 0 mm | 6 | |
| 12 Apr. | Sunny | 22° /10° | 0 mm | 6 | |
| 13 Apr. | Sunny | 22° /10° | 0.7 mm | 6 | |
| 14 Apr. | Partly cloudy | 18° /12° | 14.7 mm | 5 | |
| 15 Apr. | Partly cloudy | 18° /11° | 20.9 mm | 5 | |
| 16 Apr. | Light drizzle | 20° /7° | 3.6 mm | 5 | |
| 17 Apr. | Light rain shower | 17° /5° | 2.3 mm | 4 | |
| 18 Apr. | Patchy rain possible | 13° /6° | 1.1 mm | 3 | |
| 19 Apr. | Partly cloudy | 15° /6° | 0.5 mm | 4 | |
| 20 Apr. | Light drizzle | 15° /6° | 0.5 mm | 4 | |
| 21 Apr. | Overcast | 17° /8° | 0 mm | 4 | |
| 22 Apr. | Moderate rain | 17° /8° | 7.4 mm | 4 | |
| 23 Apr. | Light drizzle | 16° /7° | 6.7 mm | 4 | |
| 24 Apr. | Light rain shower | 15° /7° | 10.8 mm | 4 | |
| 25 Apr. | Light rain shower | 12° /6° | 3.8 mm | 3 | |
| 26 Apr. | Light rain shower | 13° /7° | 3.4 mm | 3 | |
| 27 Apr. | Light rain shower | 19° /7° | 1.5 mm | 5 | |
| 28 Apr. | Overcast | 21° /10° | 0 mm | 5 | |
| 29 Apr. | Sunny | 23° /10° | 0 mm | 6 | |
| 30 Apr. | Patchy rain possible | 24° /11° | 1.9 mm | 5 | |
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Important Notice
Our weather forecast for Koper in April is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Koper forecast closer to your planned date for the most up-to-date weather information.
Koper in April - FAQ
What are the expected maximum and minimum temperatures in Koper during April?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Koper during April?
Significant rainfall exceeding 186.6 mm is expected in Koper during April, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Koper during April?
The average wind speed in Koper during April is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in Koper
Explore the daily rainfall trends and prepare for Kopers April weather 💧
UV exposure in Koper during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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