Senj Weather in September
September in Senj brings pleasant temperatures around 22°C (72°F) during the day, dropping to 13°C (55°F) at night, with quite a bit of rainfall expected, averaging around 147 mm (5.8 in) for the month.
Rainfall in Senj in September
You can expect rain on around 13 days based on historical patterns, with 147 mm (5.8 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Senj in September
Daytime highs in Senj in September reach 22°C (72°F), with nights around 13°C (55°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 13°C (55°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 Senj in September
There are approximately 214 hours of sunshine this month, resulting in mostly clear days.For Senj itself, June, July and August generally stand out with the best 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 Senj's climate page.
Senj Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
22°C (72°F)
Chance of Rain
42%
Precipitation
147 mm (5.8 in)
Rainy days
13 days
Sunshine
214 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Senj 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
49-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 Senj in September
Browse day-by-day weather records for Senj spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Senj historical weather extremes in September
Based on weather observations in Senj between 1993 and 2025, these are the recorded extremes during September.
- On September 2, 2024, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 13°C (55°F), recorded on September 18, 2005.
- Nighttime temperatures dropped to 4°C (39°F) on September 27, 2002, marking the coldest September night on record.
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
poor
What to Wear in Senj in September
For Senj in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Senj 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 Senj's climate page.
See the full Senj climate overview or explore weather in Croatia.
