Umag Weather in September
September in Umag sees daytime temperatures around 24°C (75°F) and lows of 19°C (66°F) at night. With around 144 mm (5.7 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Umag in September
You can expect rain on roughly 11 days based on historical data, averaging 144 mm (5.7 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Umag in September
In September, Umag sees high temperatures, with highs of 24°C (75°F). Nights drop to around 19°C (66°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Umag in September
Expect sunny days throughout the month, with an estimated 223 hours of sunshine. This makes it a pleasant time to visit Umag.Should you favor a climate that's both dry and comfortably warm, May, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Umag's climate page.
Umag Temperature in September
Min Temperature
19°C (66°F)
Max Temperature
24°C (75°F)
Chance of Rain
35%
Precipitation
144 mm (5.7 in)
Rainy days
11 days
Humidity
57% *
Sunshine
223 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Umag typically drop from around 26°C (79°F) at the start of September to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 12°C (54°F) to 16°C (61°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Umag in September
Browse day-by-day weather records for Umag spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Umag historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Umag.
- The hottest September day on record in Umag reached 35°C (95°F) (September 22, 1985).
- Umag experienced its chilliest September day on September 18, 1977, reaching only 11°C (52°F).
- The lowest overnight temperature recorded in September was 4°C (39°F) (September 29, 1977).
Best Places in Croatia in September
Find out more about the weather in Croatia and which places have the best travel conditions in this month. See all of Croatia in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Umag in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Umag in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Umag's climate page.
Temperature Rainfall Sunshine Humidity
See the full Umag climate overview or explore weather in Croatia.
