Reda weather in September

In September, Reda sees average daytime highs of 17°C and overnight lows near 10°C, with 59 mm of rain across 11 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 20% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Reda's 6th-clearest and 7th-windiest month. For the whole year in context, see Reda's year-round climate.

Daytime high
17°
4th warmest
Overnight low
10°
9th coldest
Rainfall
59 mm
11 wet days
Daylight
12 h 24 min
5:28 AM – 5:54 PM
Cloud cover
65%
6th clearest
Wind
15 km/h
7th windiest
Solar energy
2.94 kWh/m²
Travel score
5.2
out of 10

Reda is town and urban gmina in northern Poland.

Density
615/km²
people per km²
Founded
1357

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 15°C by the end.

A typical September day in Reda reaches about 17°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 22°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11911
21911
31911
41911
51911
61811
71811
81811
91810
101810
111810
121810
131710
141710
151710
161710
17179
18179
19179
20169
21169
22169
23169
24169
25168
26168
27158
28158
29158
30158

How September really feels in Reda

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Reda weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°4310.967.60.0
Feb / -3°369.65.99.30.0
Mar / -1°4410.94.611.50.4
Apr11° / 439.81.313.72.8
May16° / 6511.5015.84.9
Jun19° / 11°7713016.95.6
Jul21° / 13°9713.9016.46.0
Aug21° / 13°8313014.76.1
Sep17° / 10°5911012.55.2
Oct12° / 5311.20.310.22.9
Nov / 419.92.18.20.5
Dec / -1°4510.74.77.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14258
24159
34060
44060
53862
63862
73862
83763
93763
103664
113664
123664
133664
143664
153763
163763
173763
183763
193763
203862
213862
223862
233862
243763
253763
263763
273763
283763
293763
303664

Chance of precipitation in September

Any precipitation

Reda gets around 59 mm of rain over 11 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
146
246
346
446
545
645
744
843
942
1041
1140
1239
1338
1437
1536
1635
1734
1833
1933
2032
2132
2231
2331
2431
2531
2632
2732
2832
2933
3034

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
165305
266295
367285
469274
571254
672244
773234
875223
976213
1078193
1179183
1280173
1382162
1483152
1584142
1685132
1787121
1888111
1989101
209091
219091
229280
239370
249370
259370
269460
279460
289460
299460
309460

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 36 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 132 minutes over September. Sunrise moves from 5:00 AM to 5:55 AM, and sunset from 6:33 PM to 5:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:006:33
213.55:016:31
313.45:036:28
413.35:056:25
513.35:076:23
613.25:096:20
713.15:116:18
813.05:136:15
913.05:156:12
1012.95:176:10
1112.85:186:07
1212.75:206:05
1312.75:226:02
1412.65:245:59
1512.55:265:57
1612.45:285:54
1712.45:305:51
1812.35:325:49
1912.25:345:46
2012.15:355:43
2112.15:375:41
2212.05:395:38
2311.95:415:36
2411.85:435:33
2511.85:455:30
2611.75:475:28
2711.65:495:25
2811.55:515:22
2911.55:535:20
3011.45:555:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.94 kWh/m².

For context, solar energy here swings from a low near 0.43 kWh/m² to a high of 5.71 kWh/m² in June across the year — September's 2.94 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.5Moderate
43.5Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.2Moderate
103.2Moderate
113.1Moderate
123.1Moderate
133.0Moderate
143.0Moderate
153.0Moderate
162.9Moderate
172.9Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.7Moderate
222.7Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.3Moderate
Planning a trip in September

Is September a good time to visit Reda?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.2
Sightseeing
4th-best month of the year
1.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Reda for sightseeing.

What to pack for Reda in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Reda sees daytime highs around 17°C and nights near 10°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Reda in September

The nearest coast averages about 16°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 19°C and coldest in February near 3°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr5Bracing
May9Bracing
Jun14Bracing
Jul17Cool
Aug19Cool
Sep16Cool
Oct13Bracing
Nov9Bracing
Dec6Bracing

UV index in Reda in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Reda peaks around June 20 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 6Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5Moderate
Jun6High
Jul5High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Reda?

Reda sits at 54.6°N, 18.3°E, 7 m above sea level, in Poland. The nearest listed city is Rumia, 5.0 km away.

Topography around Reda

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Reda.

Within 3 km, the terrain around Reda has only modest variations in elevation — a maximum elevation change of 158 m around an average of 45 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 246 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around Reda is covered by trees (54%) and grassland (27%) within 3 km, trees (47%) within 16 km, and water (42%), trees (25%) and cropland (21%) within 80 km.

3 km
158 m
16 km
246 m
80 km
339 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Rumia 5.0 km · Wejherowo 7.0 km · Gdynia 15 km · Osowa 21 km · Sopot 23 km · Przymorze Wielkie 27 km · Wrzeszcz Górny 30 km · Wrzeszcz Dolny 30 km

Poland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$28,420
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
9.4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 600
Religion
Roman Catholic 71%refused to answer 21%no religion 7%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Reda (54.6053°, 18.3472°, elevation 7 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).