Covilhã weather in September

In September, Covilhã sees average daytime highs of 24°C and overnight lows near 13°C, with 63 mm of rain across 6.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 22°C by the end. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels dry.

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 Covilhã's 4th-clearest and 12th-windiest month. For the whole year in context, see Covilhã's year-round climate.

Daytime high
24°
4th warmest
Overnight low
13°
10th coldest
Rainfall
63 mm
6.6 wet days
Daylight
12 h 18 min
6:16 AM – 6:32 PM
Cloud cover
41%
4th clearest
Wind
8 km/h
12th windiest
Solar energy
5.02 kWh/m²
Travel score
7.6
out of 10

Covilhã is human settlement in Portugal.

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 26°C in the first days to 22°C by the end.

A typical September day in Covilhã reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12715
22715
32715
42615
52615
62614
72614
82614
92514
102514
112514
122514
132514
142414
152414
162413
172413
182413
192313
202313
212313
222313
232313
242312
252212
262212
272212
282212
292212
302212

Covilhã weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 11110.40.79.52.2
Feb12° / 788.40.710.43.0
Mar15° / 949.90.211.74.4
Apr16° / 9511.60.1135.0
May20° / 10°8910.7014.26.3
Jun25° / 13°315.5014.87.8
Jul28° / 16°143.2014.67.4
Aug28° / 16°193.9013.67.3
Sep24° / 13°636.6012.37.6
Oct18° / 10°14411.2010.95.8
Nov13° / 12111.30.29.83.6
Dec10° / 12410.50.29.22.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28020
37921
47921
57822
67723
77525
87525
97426
107228
117129
127129
137030
146832
156733
166733
176733
186634
196535
206436
216337
226436
236337
246238
256238
266139
276139
286139
296040
306040

Chance of precipitation in September

Any precipitation

Covilhã gets around 63 mm of rain over 6.6 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 22% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
116
216
316
417
517
617
718
818
919
1019
1120
1221
1322
1422
1523
1623
1724
1824
1924
2025
2125
2225
2325
2425
2525
2625
2725
2825
2925
3025

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
173261
273261
374251
474251
575241
676231
777230
878220
978220
1079210
1179210
1279210
1379210
1479210
1579210
1679210
1779210
1880200
1980200
2080200
2180200
2280200
2380200
2480191
2580191
2681181
2781181
2882171
2983161
3083161

Wind in September

Winds average 8 km/h in September, the calmest month.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:02 AM to 6:31 AM, and sunset from 6:58 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:026:58
212.96:036:56
312.86:046:54
412.86:056:53
512.86:066:51
612.76:076:49
712.76:086:48
812.66:096:46
912.66:106:44
1012.56:116:43
1112.56:126:41
1212.46:136:39
1312.46:146:37
1412.46:156:36
1512.36:156:34
1612.36:166:32
1712.26:176:30
1812.26:186:29
1912.16:196:27
2012.16:206:25
2112.06:216:24
2212.06:226:22
2311.96:236:20
2411.96:246:18
2511.96:256:17
2611.86:276:15
2711.86:286:13
2811.76:296:11
2911.76:306:10
3011.66:316:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.02 kWh/m².

For context, solar energy here swings from a low near 1.74 kWh/m² to a high of 7.61 kWh/m² in July across the year — September's 5.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.4Bright
105.4Bright
115.3Bright
125.2Bright
135.2Bright
145.1Bright
155.0Bright
165.0Bright
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 Covilhã

In seasonPeak

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

Covilhã'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 Covilhã?

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

7.6
Sightseeing
2nd-best month of the year
6.4
Beach & pool
4th-best month of the year

September is one of the better times to visit Covilhã for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Covilhã in September

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

In September, Covilhã sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Covilhã 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 Covilhã peaks around July 16 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 16UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar6High
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Covilhã 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 Covilhã is worst in August — around 40 µg/m³ PM2.5 (poor), about 6.0× the cleanest month (November, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateModerateGoodAug 1736 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar13Moderate
Apr10Good
May8Good
Jun10Good
Jul11Good
Aug40Poor
Sep13Moderate
Oct26Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Covilhã?

Covilhã sits at 40.3°N, 7.5°W, 700 m above sea level, in Portugal. The nearest listed city is Guarda, 35 km away.

Topography around Covilhã

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

Within 3 km, the terrain around Covilhã has large variations in elevation — a maximum elevation change of 942 m around an average of 716 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,614 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,975 m.

The land around Covilhã is covered by grassland (42%) and trees (33%) within 3 km, grassland (53%) and trees (35%) within 16 km, and grassland (47%) and trees (46%) within 80 km.

3 km
942 m
16 km
1,614 m
80 km
1,975 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Guarda 35 km · Sequeira 38 km · Castelo Branco 51 km · Viseu 54 km · São Paulo de Frades 76 km · Santo António dos Olivais 77 km · Eiras 77 km · Coimbra 78 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 Covilhã (40.2811°, -7.505°, elevation 700 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. 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).