Senec Weather in September

September in Senec averages 23°C (73°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 72 mm (2.8 in) on average. An umbrella is a good idea.

Rainfall in Senec in September

You can expect rain on roughly 9 days based on historical data, averaging 72 mm (2.8 in) 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 Senec in September

Senec has perfect weather in September, with days reaching 23°C (73°F) and nights cooling to 12°C (54°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Senec in September

With approximately 205 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Senec in September

Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Senec.

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For a detailed overview over the year and the best time to visit Slovakia, check out our Senec's climate page.

Senec Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 31%  

Precipitation 72 mm (2.8 in)  

Rainy days 9 days  

Humidity 73% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 205 hours *  

Percentage Sunshine *  

* Data from: Bratislava, Slovakia (14 KM, 9 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Senec typically drop from around 23°C (73°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).

Average temperatures in September

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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

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‹ January February March April May June July August September October November December ›

Historical weather for Senec in September

Browse day-by-day weather records for Senec spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Senec historical weather extremes in September

Based on weather observations in Senec between 1976 and 2025, these are the recorded extremes during September.

• The hottest September day on record in Senec reached 33°C (91°F) (September 3, 2024).
• The coldest September day was on September 13, 2024, with a maximum of 9°C (48°F).
• Senec registered its coldest September night on September 29, 1977, with temperatures dropping to -1°C (30°F).

What to Wear in Senec in September

For Senec 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. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Senec in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Slovakia, check out our Senec's climate page.

More climate data for Senec

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Senec climate overview or explore weather in Slovakia.