Weather in Opatija for September 2025
In general, the average temperature in Opatija at the beginning of September is 27.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.
Opatija in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 277.8 mm.
Is September a good time to visit Opatija? check out the best time to travel to Opatija page.
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Opatija Weather September
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 30° | 2 30° | 3 28° | 4 28° | 5 26° | 6 23° | 7 25° |
8 25° | 9 22° | 10 23° | 11 22° | 12 19° | 13 13° | 14 15° |
15 16° | 16 18° | 17 14° | 18 19° | 19 19° | 20 18° | 21 22° |
22 21° | 23 20° | 24 18° | 25 18° | 26 20° | 27 20° | 28 19° |
29 17° | 30 16° |
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Temperatures trend during September in Opatija
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Sunny | 30° /21° | 0 mm | 8 | |
2 Sept. | Sunny | 30° /20° | 0 mm | 8 | |
3 Sept. | Patchy rain possible | 28° /20° | 0.1 mm | 6 | |
4 Sept. | Heavy rain at times | 28° /19° | 1 mm | 6 | |
5 Sept. | Moderate or heavy rain shower | 26° /19° | 10.2 mm | 6 | |
6 Sept. | Patchy rain possible | 23° /17° | 2.1 mm | 5 | |
7 Sept. | Sunny | 25° /17° | 0 mm | 7 | |
8 Sept. | Cloudy | 25° /19° | 2.7 mm | 6 | |
9 Sept. | Moderate or heavy rain shower | 22° /16° | 32.8 mm | 5 | |
10 Sept. | Overcast | 23° /13° | 0 mm | 5 | |
11 Sept. | Overcast | 22° /15° | 0 mm | 5 | |
12 Sept. | Moderate or heavy rain shower | 19° /12° | 59.9 mm | 4 | |
13 Sept. | Moderate or heavy rain shower | 13° /9° | 39.5 mm | 3 | |
14 Sept. | Moderate rain at times | 15° /10° | 9.6 mm | 4 | |
15 Sept. | Moderate rain at times | 16° /10° | 1.4 mm | 4 | |
16 Sept. | Patchy rain possible | 18° /9° | 1.8 mm | 4 | |
17 Sept. | Patchy rain possible | 14° /10° | 3.4 mm | 3 | |
18 Sept. | Overcast | 19° /11° | 0 mm | 4 | |
19 Sept. | Heavy rain at times | 19° /15° | 10.7 mm | 4 | |
20 Sept. | Overcast | 18° /14° | 0.5 mm | 4 | |
21 Sept. | Sunny | 22° /12° | 0 mm | 6 | |
22 Sept. | Sunny | 21° /12° | 0 mm | 6 | |
23 Sept. | Patchy rain possible | 20° /13° | 0.5 mm | 4 | |
24 Sept. | Moderate or heavy rain shower | 18° /15° | 30.1 mm | 4 | |
25 Sept. | Heavy rain at times | 18° /14° | 11.9 mm | 4 | |
26 Sept. | Moderate or heavy rain shower | 20° /15° | 32.7 mm | 5 | |
27 Sept. | Heavy rain at times | 20° /17° | 12.1 mm | 5 | |
28 Sept. | Patchy rain possible | 19° /12° | 14.2 mm | 4 | |
29 Sept. | Partly cloudy | 17° /10° | 0.6 mm | 5 | |
30 Sept. | Partly cloudy | 16° /8° | 0 mm | 5 | |
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Opatija in September - FAQ
What to pack to Opatija in September?
As you prepare for your trip to Opatija in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Opatija, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Opatija
UV exposure in Opatija during September
Quick links
Get accurate weather forecasts for Opatija, located at latitude 45.337 and longitude 14.308. Stay updated with localized weather information tailored for Opatija.