Ovar weather in September

In September, Ovar sees average daytime highs of 23°C and overnight lows near 16°C, with 51 mm of rain across 6 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Ovar's 3rd-clearest and 12th-windiest month. For the whole year in context, see Ovar's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
16°
10th coldest
Rainfall
51 mm
6 wet days
Daylight
12 h 18 min
6:21 AM – 6:37 PM
Cloud cover
38%
3rd clearest
Wind
13 km/h
12th windiest
Solar energy
4.99 kWh/m²
Travel score
7.8
out of 10

Ovar is city seat of Ovar municipality.

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 24°C in the first days to 22°C by the end.

A typical September day in Ovar reaches about 23°C in the afternoon and slips back to 16°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12417
22417
32417
42417
52417
62417
72417
82417
92317
102317
112316
122316
132316
142316
152316
162316
172316
182316
192316
202216
212216
222216
232216
242216
252216
262216
272216
282215
292215
302215

Ovar weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 12812.19.43.8
Feb14° / 889.310.44.4
Mar16° / 10°959.911.75.3
Apr17° / 11°9810.913.15.7
May20° / 13°799.614.26.5
Jun22° / 16°26514.97.8
Jul24° / 17°122.714.68.8
Aug24° / 17°173.413.68.7
Sep23° / 16°51612.37.8
Oct20° / 14°1431210.96.1
Nov16° / 11°14512.79.74.9
Dec14° / 14112.29.14.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
28020
38020
47921
57921
67822
77822
87723
97525
107525
117426
127426
137327
147327
157129
167129
177030
187030
196832
206832
216733
226733
236733
246634
256634
266535
276535
286436
296436
306337

Chance of precipitation in September

Any precipitation

Ovar gets around 51 mm of rain over 6 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 20% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
113
213
313
413
513
614
714
815
915
1016
1117
1218
1319
1420
1520
1621
1722
1823
1923
2024
2124
2225
2326
2426
2526
2626
2727
2827
2927
3027

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11035532
21135522
31135522
41235512
51236502
61236502
71337492
81337482
91338472
101439462
111439452
121540442
131541422
141542412
151643402
161643391
171744381
181845371
191845361
201946351
211946341
221946341
232047331
242047321
252147321
262147311
272247301
282347291
292547281
302646271

Wind in September

Winds average 13 km/h in September, the calmest month.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 6:06 AM to 6:35 AM, and sunset from 7:03 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:067:03
212.96:077:01
312.96:086:59
412.86:096:58
512.86:106:56
612.76:116:54
712.76:126:53
812.66:136:51
912.66:146:49
1012.56:156:47
1112.56:166:46
1212.56:176:44
1312.46:186:42
1412.46:196:40
1512.36:206:39
1612.36:216:37
1712.26:226:35
1812.26:236:33
1912.16:246:32
2012.16:256:30
2112.06:266:28
2212.06:276:26
2311.96:286:24
2411.96:296:23
2511.86:306:21
2611.86:316:19
2711.86:326:18
2811.76:336:16
2911.76:346:14
3011.66:356:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.99 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7.32 kWh/m² in July across the year — September's 4.99 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.4Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.0Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.2Bright
Planning a trip in September

Hazard calendar for Ovar

In seasonPeak

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

Ovar's rainy season runs October–May, 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 Ovar?

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

7.8
Sightseeing
3rd-best month of the year
5.9
Beach & pool
3rd-best month of the year

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

What to pack for Ovar in September

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

In September, Ovar sees daytime highs around 23°C and nights near 16°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Ovar in September

The nearest coast averages about 18°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 21 km away) is warmest in September at about 18°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May16Cool
Jun17Cool
Jul18Cool
Aug18Cool
Sep18Cool
Oct17Cool
Nov16Cool
Dec15Bracing

UV index in Ovar in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ovar peaks around July 11 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 11UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Ovar in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Ovar is worst in October — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1119 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar11Good
Apr10Good
May8Good
Jun12Good
Jul8Good
Aug14Moderate
Sep17Moderate
Oct19Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Ovar?

Ovar sits at 40.9°N, 8.6°W, 16 m above sea level, in Portugal. The nearest listed city is Feira, 10 km away.

Topography around Ovar

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

Within 3 km, the terrain around Ovar has only modest variations in elevation — a maximum elevation change of 55 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 413 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,402 m.

The land around Ovar is covered by trees (29%), grassland (25%) and artificial surfaces (21%) within 3 km, water (36%) and trees (31%) within 16 km, and trees (43%), water (26%) and grassland (21%) within 80 km.

3 km
55 m
16 km
413 m
80 km
1,402 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Feira 10 km · São João da Madeira 12 km · Espinho 17 km · Aveiro 24 km · Vilar 26 km · Valadares 26 km · Vilar de Andorinho 28 km · Santo Ovídio 28 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 Ovar (40.8586°, -8.6251°, elevation 16 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).