Cisek, Poland — Weather in September 2026

Monthly climate averages for Cisek, Poland. Based on 10-year ERA5 reanalysis data.

Cfb Oceanic
6.9 /10
Good

September is a good month in Cisek

Climate Overview

Cisek, Poland in September has warm conditions, with highs averaging 20.5°C (69°F). Rain falls on about 11 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 23°C (73°F) at the start to 18°C (64°F) by month's end.

Rainfall is heaviest during the middle of the month, while the last third tends to be drier.

Expect around 9.4h of sunshine at the start of September, decreasing to 7.4h by the end.

The warmest days tend to fall around the 9th, averaging 23.2°C (74°F).

Compared to August, this month is about 4°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
21°C / 12°C
Feels Like
19°C / 10°C
Rain
11 days · 84 mm
Sunshine
8.3h / day
Humidity
74% — Humid
Wind
16 km/h
Wind Direction
SW (228°)
Gusts
33 km/h
Daylight
12.6 h
Cloud Cover
58%
Clear Sky Days
4.2
UV Index
4.2 — Moderate
Dew Point
12°C — Comfortable
Moon Phase
Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

28°C 24°C 20°C 16°C 12°C 8°C 4°C 151015202530
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202530
Wind Speed
Sun Position
Sunrise 06:24
Daylight 12.7h
Sunset 19:04

What to Expect

Daytime temperatures around 21°C (69°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
3°C / -2°C
Feels Like
-1°C / -7°C
Rain
12days (41 mm) Wet
Sun
4h Fair
Humidity
82% Humid
UV
1.2 Low
Snow Days
10days
View Details
February
Poor
Temp
6°C / -1°C
Feels Like
2°C / -5°C
Rain
11days (49 mm) Wet
Sun
5.3h Fair
Humidity
78% Humid
UV
1.8 Low
Snow Days
6days
View Details
March
Poor
Temp
10°C / 1°C
Feels Like
6°C / -3°C
Rain
10days (39 mm) Wet
Sun
7.6h Good
Humidity
72% Muggy
UV
3.6 Moderate
Snow Days
3days
View Details
April
Fair
Temp
15°C / 5°C
Feels Like
11°C / 1°C
Rain
10days (51 mm) Wet
Sun
9.3h Good
Humidity
68% Muggy
UV
4.7 Moderate
Snow Days
2days
View Details
May best
Good
Temp
19°C / 9°C
Feels Like
17°C / 7°C
Rain
11days (65 mm) Wet
Sun
10.7h Excellent
Humidity
69% Muggy
UV
5.8 High
View Details
June best
Excellent
Temp
24°C / 14°C
Feels Like
24°C / 14°C
Rain
12days (77 mm) Wet
Sun
12h Excellent
Humidity
69% Muggy
UV
6.4 High
View Details
July best
Excellent
Temp
25°C / 16°C
Feels Like
25°C / 15°C
Rain
13days (91 mm) Wet
Sun
11.7h Excellent
Humidity
69% Muggy
UV
6.1 High
View Details
August best
Excellent
Temp
25°C / 16°C
Feels Like
25°C / 15°C
Rain
12days (89 mm) Wet
Sun
10.4h Excellent
Humidity
71% Muggy
UV
5.5 High
View Details
September best
Good
Temp
21°C / 12°C
Feels Like
19°C / 10°C
Rain
11days (84 mm) Wet
Sun
8.3h Good
Humidity
74% Muggy
UV
4.2 Moderate
View Details
October
Fair
Temp
15°C / 8°C
Feels Like
12°C / 5°C
Rain
10days (63 mm) Wet
Sun
6.3h Fair
Humidity
78% Humid
UV
2.5 Moderate
View Details
November
Poor
Temp
8°C / 3°C
Feels Like
5°C / -1°C
Rain
10days (48 mm) Wet
Sun
4.3h Fair
Humidity
83% Humid
UV
1.5 Low
Snow Days
4days
View Details
December
Poor
Temp
4°C / 0°C
Feels Like
0°C / -5°C
Rain
11days (45 mm) Wet
Sun
3.4h Poor
Humidity
85% Humid
UV
1 Low
Snow Days
7days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 3°C / -2°C -1°C / -7°C 12days (41 mm) Wet 4h Fair 82% Humid 1.2 Low Poor View Details
February 6°C / -1°C 2°C / -5°C 11days (49 mm) Wet 5.3h Fair 78% Humid 1.8 Low Poor View Details
March 10°C / 1°C 6°C / -3°C 10days (39 mm) Wet 7.6h Good 72% Muggy 3.6 Moderate Poor View Details
April 15°C / 5°C 11°C / 1°C 10days (51 mm) Wet 9.3h Good 68% Muggy 4.7 Moderate Fair View Details
May best 19°C / 9°C 17°C / 7°C 11days (65 mm) Wet 10.7h Excellent 69% Muggy 5.8 High Good View Details
June best 24°C / 14°C 24°C / 14°C 12days (77 mm) Wet 12h Excellent 69% Muggy 6.4 High Excellent View Details
July best 25°C / 16°C 25°C / 15°C 13days (91 mm) Wet 11.7h Excellent 69% Muggy 6.1 High Excellent View Details
August best 25°C / 16°C 25°C / 15°C 12days (89 mm) Wet 10.4h Excellent 71% Muggy 5.5 High Excellent View Details
September best 21°C / 12°C 19°C / 10°C 11days (84 mm) Wet 8.3h Good 74% Muggy 4.2 Moderate Good View Details
October 15°C / 8°C 12°C / 5°C 10days (63 mm) Wet 6.3h Fair 78% Humid 2.5 Moderate Fair View Details
November 8°C / 3°C 5°C / -1°C 10days (48 mm) Wet 4.3h Fair 83% Humid 1.5 Low Poor View Details
December 4°C / 0°C 0°C / -5°C 11days (45 mm) Wet 3.4h Poor 85% Humid 1 Low Poor View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm evening layerUmbrellaWaterproof jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

September is typically good for visiting Cisek, with average highs of 21°C (69°F) and around 11 rainy days. Cisek, Poland in September has warm conditions, with highs averaging 20.5°C (69°F). Rain falls on about 11 days this mon
Cisek typically sees around 11 rainy days in September with 84 mm (3.3 in) of total rainfall. Pack a waterproof jacket.
Nights in Cisek during September are cool at around 12°C (53°F). Bring a jacket or sweater for evenings.
With highs of 21°C (69°F) and lows of 12°C (53°F) in September, we recommend: Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Cisek with comfortable temperatures and lower chances of rain.
The average UV index in Cisek during September is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Cisek gets approximately 13 hours of daylight per day in September, with around 8 hours of sunshine.
Snow is uncommon in Cisek during September based on 10-year climate averages.

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