Peniche weather in September

In September, Peniche sees average daytime highs of 19°C and overnight lows near 18°C, with 28 mm of rain across 4.3 wet days and about 12.3 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Peniche's 4th-clearest and 12th-windiest month. For the whole year in context, see Peniche's year-round climate.

Daytime high
19°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
28 mm
4.3 wet days
Daylight
12 h 18 min
6:24 AM – 6:39 PM
Cloud cover
37%
4th clearest
Wind
20 km/h
12th windiest
Solar energy
5.17 kWh/m²
Travel score
7.4
out of 10

Peniche is city seat of Peniche municipality.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical September day in Peniche reaches about 19°C in the afternoon and slips back to 18°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 21°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

15°18°20°23°25°151015202530
Avg high (°C)Avg low (°C)
11918
21918
31918
41918
51918
61918
71918
81918
91918
101918
111918
121918
131918
141918
151918
161918
171918
181918
191918
201918
211918
221918
231918
241918
251918
261918
271918
281918
291918
301918

Peniche weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 12°8610.89.54.1
Feb14° / 12°638.410.54.2
Mar15° / 13°558.311.74.7
Apr15° / 14°538.7134.9
May16° / 15°416.214.15.9
Jun18° / 17°92.314.77.4
Jul19° / 18°4114.58.0
Aug20° / 18°51.413.58.0
Sep19° / 18°284.312.37.4
Oct18° / 17°849.2116.3
Nov16° / 15°9811.69.85.1
Dec15° / 13°8810.89.34.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28317
38317
48317
58218
68119
78020
88020
97921
107921
117822
127822
137723
147723
157723
167525
177525
187525
197525
207426
217426
227327
237228
247228
257129
267030
276931
286931
296832
306733

Chance of precipitation in September

Any precipitation

Peniche gets around 28 mm of rain over 4.3 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 14% and peaks near 20% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
47
57
68
78
89
99
1010
1111
1212
1313
1414
1515
1615
1716
1817
1918
2018
2119
2219
2319
2420
2520
2619
2719
2819
2919
3019

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
10186913
21196713
31196713
41206514
51206514
61216414
72216314
82226214
92226214
102236114
113246013
123246013
133255913
144265812
154275712
164285711
175285710
18529579
19529588
20630577
21630577
22630586
23731566
24731575
25731575
26832555
27832555
28933535
291033525
301133515

Wind in September

Winds average 20 km/h in September, the calmest month.

Across September, daily wind ranges from about 20 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
120light breeze
220light breeze
320light breeze
420light breeze
520light breeze
620light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2920breezy
3020breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 6:10 AM to 6:38 AM, and sunset from 7:04 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:107:04
212.96:117:03
312.86:127:01
412.86:137:00
512.76:146:58
612.76:156:56
712.66:166:55
812.66:176:53
912.66:186:51
1012.56:196:50
1112.56:206:48
1212.46:206:46
1312.46:216:45
1412.36:226:43
1512.36:236:41
1612.36:246:39
1712.26:256:38
1812.26:266:36
1912.16:276:34
2012.16:286:33
2112.06:296:31
2212.06:306:29
2311.96:316:28
2411.96:326:26
2511.96:336:24
2611.86:346:23
2711.86:356:21
2811.76:366:19
2911.76:376:18
3011.66:386:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.17 kWh/m².

For context, solar energy here swings from a low near 1.94 kWh/m² to a high of 7.39 kWh/m² in July across the year — September's 5.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.7Bright
75.7Bright
85.6Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.3Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.4Bright
Planning a trip in September

Hazard calendar for Peniche

In seasonPeak

None of Peniche's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Peniche's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Peniche?

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

7.4
Sightseeing
3rd-best month of the year
3.3
Beach & pool
3rd-best month of the year

September is one of the better times to visit Peniche for general sightseeing.

What to pack for Peniche in September

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

In September, Peniche sees daytime highs around 19°C and nights near 18°C. Worth packing: sun protection. About 4 days see rain.

sun protection

Sea temperature near Peniche in September

The nearest coast averages about 19°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 19°C and coldest in February near 14°C.

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

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May16Cool
Jun18Cool
Jul18Cool
Aug19Cool
Sep19Cool
Oct18Cool
Nov17Cool
Dec15Cool

UV index in Peniche in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Peniche peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 14UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar6High
Apr8Very high
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low
Location & terrain

Where is Peniche?

Peniche sits at 39.4°N, 9.4°W, 17 m above sea level, in Portugal. The nearest listed city is Caldas da Rainha, 22 km away.

Topography around Peniche

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

Within 3 km, the terrain around Peniche has only modest variations in elevation — a maximum elevation change of 32 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, large variations in elevation — a maximum elevation change of 673 m.

The land around Peniche is covered by water (70%) within 3 km, water (73%) within 16 km, and water (40%), trees (24%) and grassland (24%) within 80 km.

3 km
32 m
16 km
204 m
80 km
673 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Caldas da Rainha 22 km · Torres Vedras 31 km · Alcobaça 41 km · Azambuja 54 km · Vila Franca de Xira 56 km · Marinha Grande 58 km · Monsanto 59 km · Vialonga 60 km

Portugal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$32,082
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2022
Road deaths
8.2
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 612
Religion
Catholic 68%not applicable 13%no religion 12%no response 2%

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 Peniche (39.3558°, -9.3811°, elevation 17 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).