Sterdyń, Poland — Weather in September 2026

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

Cfb Oceanic
7.2 /10
Good

September is a good month in Sterdyń

Climate Overview

Sterdyń, Poland in September has mild conditions, with highs averaging 19.5°C (67°F) and noticeably cooler mornings.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 22°C (71°F) at the start to 16°C (61°F) by month's end.

September sees fairly even rainfall, totalling about 57 mm across the month.

Expect around 9.7h of sunshine at the start of September, decreasing to 6.9h by the end.

Wind speeds pick up through the month, from 15 km/h (9 mph) to 19 km/h (12 mph).

The warmest days tend to fall around the 10th, averaging 22.2°C (72°F).

Compared to August, this month is about 5°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
20°C / 12°C
Feels Like
18°C / 10°C
Rain
9 days · 57 mm
Sunshine
8.3h / day
Humidity
74% — Humid
Wind
17 km/h
Wind Direction
S (188°)
Gusts
35 km/h
Daylight
12.6 h
Cloud Cover
58%
Clear Sky Days
5
UV Index
4.1 — Moderate
Dew Point
11°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
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 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 06:05
Daylight 12.7h
Sunset 18:46

Compare Months

January
Poor
Temp
1°C / -3°C
Feels Like
-3°C / -8°C
Rain
12days (49 mm) Wet
Sun
2.4h Poor
Humidity
87% Very Muggy
UV
1 Low
Snow Days
13days
View Details
February
Poor
Temp
3°C / -2°C
Feels Like
-1°C / -7°C
Rain
10days (47 mm) Wet
Sun
4.4h Fair
Humidity
82% Humid
UV
1.7 Low
Snow Days
8days
View Details
March
Poor
Temp
8°C / 0°C
Feels Like
4°C / -4°C
Rain
9days (33 mm) Wet
Sun
7.2h Good
Humidity
74% Muggy
UV
3.1 Moderate
Snow Days
5days
View Details
April
Fair
Temp
13°C / 4°C
Feels Like
10°C / 0°C
Rain
10days (44 mm) Wet
Sun
9.7h Good
Humidity
69% Muggy
UV
4.6 Moderate
Snow Days
2days
View Details
May best
Good
Temp
18°C / 9°C
Feels Like
16°C / 6°C
Rain
10days (59 mm) Wet
Sun
11.5h Excellent
Humidity
66% Muggy
UV
5.7 High
View Details
June best
Excellent
Temp
24°C / 14°C
Feels Like
23°C / 13°C
Rain
10days (66 mm) Wet
Sun
12.5h Excellent
Humidity
65% Muggy
UV
6 High
View Details
July best
Excellent
Temp
24°C / 15°C
Feels Like
24°C / 15°C
Rain
14days (86 mm) Wet
Sun
11.8h Excellent
Humidity
70% Muggy
UV
5.9 High
View Details
August best
Excellent
Temp
24°C / 15°C
Feels Like
24°C / 15°C
Rain
10days (65 mm) Wet
Sun
10.8h Excellent
Humidity
69% Muggy
UV
5.4 High
View Details
September best
Good
Temp
20°C / 12°C
Feels Like
18°C / 10°C
Rain
9days (57 mm) Wet
Sun
8.3h Good
Humidity
74% Muggy
UV
4.1 Moderate
View Details
October
Fair
Temp
13°C / 7°C
Feels Like
10°C / 4°C
Rain
12days (64 mm) Wet
Sun
5.3h Fair
Humidity
82% Humid
UV
2.2 Moderate
View Details
November
Poor
Temp
6°C / 2°C
Feels Like
3°C / -2°C
Rain
9days (39 mm) Wet
Sun
3h Poor
Humidity
87% Very Muggy
UV
1.2 Low
Snow Days
5days
View Details
December
Poor
Temp
3°C / -1°C
Feels Like
-1°C / -5°C
Rain
11days (49 mm) Wet
Sun
1.9h Poor
Humidity
88% Very Muggy
UV
0.8 Low
Snow Days
10days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 1°C / -3°C -3°C / -8°C 12days (49 mm) Wet 2.4h Poor 87% Very Muggy 1 Low Poor View Details
February 3°C / -2°C -1°C / -7°C 10days (47 mm) Wet 4.4h Fair 82% Humid 1.7 Low Poor View Details
March 8°C / 0°C 4°C / -4°C 9days (33 mm) Wet 7.2h Good 74% Muggy 3.1 Moderate Poor View Details
April 13°C / 4°C 10°C / 0°C 10days (44 mm) Wet 9.7h Good 69% Muggy 4.6 Moderate Fair View Details
May best 18°C / 9°C 16°C / 6°C 10days (59 mm) Wet 11.5h Excellent 66% Muggy 5.7 High Good View Details
June best 24°C / 14°C 23°C / 13°C 10days (66 mm) Wet 12.5h Excellent 65% Muggy 6 High Excellent View Details
July best 24°C / 15°C 24°C / 15°C 14days (86 mm) Wet 11.8h Excellent 70% Muggy 5.9 High Excellent View Details
August best 24°C / 15°C 24°C / 15°C 10days (65 mm) Wet 10.8h Excellent 69% Muggy 5.4 High Excellent View Details
September best 20°C / 12°C 18°C / 10°C 9days (57 mm) Wet 8.3h Good 74% Muggy 4.1 Moderate Good View Details
October 13°C / 7°C 10°C / 4°C 12days (64 mm) Wet 5.3h Fair 82% Humid 2.2 Moderate Fair View Details
November 6°C / 2°C 3°C / -2°C 9days (39 mm) Wet 3h Poor 87% Very Muggy 1.2 Low Poor View Details
December 3°C / -1°C -1°C / -5°C 11days (49 mm) Wet 1.9h Poor 88% Very Muggy 0.8 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 layerUmbrellaComfortable walking shoes

Frequently Asked Questions

September is typically good for visiting Sterdyń, with average highs of 20°C (67°F) and around 9 rainy days. Sterdyń, Poland in September has mild conditions, with highs averaging 19.5°C (67°F) and noticeably cooler mornings.
Sterdyń typically sees around 9 rainy days in September with 57 mm (2.2 in) of total rainfall. An umbrella should suffice.
Nights in Sterdyń during September are cool at around 12°C (53°F). Bring a jacket or sweater for evenings.
With highs of 20°C (67°F) and lows of 12°C (53°F) in September, we recommend: Warm evening layer, Umbrella, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Sterdyń with comfortable temperatures and lower chances of rain.
The average UV index in Sterdyń during September is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Sterdyń gets approximately 13 hours of daylight per day in September, with around 8 hours of sunshine.
Snow is uncommon in Sterdyń during September based on 10-year climate averages.

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