Vila Franca de Xira weather in December

In December, Vila Franca de Xira sees average daytime highs of 15°C and overnight lows near 8°C, with 76 mm of rain across 9.3 wet days and about 9.3 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 15°C through the month. The sky is clear or mostly clear about 34% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 30 min at the start of December to 9 h 18 min by month's end. Set against the rest of the year, December is Vila Franca de Xira's 12th-clearest and 8th-windiest month. For the whole year in context, see Vila Franca de Xira's year-round climate.

Daytime high
15°
11th warmest
Overnight low
3rd coldest
Rainfall
76 mm
9.3 wet days
Daylight
9 h 18 min
7:54 AM – 5:11 PM
Cloud cover
57%
12th clearest
Wind
13 km/h
8th windiest
Solar energy
1.96 kWh/m²
Travel score
4.5
out of 10

Vila Franca de Xira is city seat of Vila Franca de Xira municipality.

Air quality
Good
PM10 22.4 µg/m³ · 2010

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 15°C through the month.

A typical December day in Vila Franca de Xira reaches about 15°C in the afternoon and slips back to 8°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 17°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1159
2159
3159
4159
5159
6158
7158
8158
9158
10158
11158
12158
13158
14158
15158
16158
17158
18158
19158
20148
21148
22148
23148
24148
25148
26148
27148
28148
29148
30148
31148

Vila Franca de Xira weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 668.79.64.3
Feb15° / 50710.55.0
Mar18° / 578.411.76.2
Apr19° / 11°578.7136.5
May22° / 13°50714.17.4
Jun26° / 15°122.614.78.3
Jul28° / 17°30.814.58.0
Aug29° / 17°61.313.57.5
Sep26° / 16°314.612.37.9
Oct22° / 14°789.2116.9
Nov17° / 10°809.79.95.6
Dec15° / 769.39.34.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34753
44753
54654
64654
74654
84654
94654
104654
114555
124555
134555
144555
154555
164654
174654
184654
194654
204654
214753
224753
234753
244753
254753
264753
274753
284852
294753
304753
314753

Chance of precipitation in December

Any precipitation

Vila Franca de Xira gets around 76 mm of rain over 9.3 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
329
429
528
628
728
828
928
1028
1128
1229
1329
1429
1529
1630
1730
1830
1931
2031
2132
2232
2332
2432
2533
2633
2733
2833
2933
3033
3133

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
189101
290100
390100
490100
59190
69190
79190
890100
990100
1090100
1190100
1290100
1390100
1490100
159190
169190
179190
189190
199190
209190
219190
229190
239190
249190
259190
269190
2790100
2890100
2990100
3090100
3190100

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 30 min at the start of December to 9 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:42 AM to 8:00 AM, and sunset from 5:10 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.57:425:10
29.47:435:10
39.47:445:09
49.47:445:09
59.47:455:09
69.47:465:09
79.47:475:09
89.47:485:09
99.37:495:09
109.37:495:09
119.37:505:09
129.37:515:10
139.37:525:10
149.37:525:10
159.37:535:10
169.37:545:11
179.37:545:11
189.37:555:11
199.37:555:12
209.37:565:12
219.37:575:12
229.37:575:13
239.37:575:13
249.37:585:14
259.37:585:14
269.37:595:15
279.37:595:16
289.37:595:16
299.38:005:17
309.38:005:17
319.38:005:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.96 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.96 kWh/m² to a high of 7.58 kWh/m² in July across the year — December's 1.96 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.1Moderate
22.1Moderate
32.1Moderate
42.0Moderate
52.0Moderate
62.0Moderate
72.0Moderate
82.0Moderate
92.0Dim
102.0Dim
112.0Dim
122.0Dim
131.9Dim
141.9Dim
151.9Dim
161.9Dim
171.9Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
231.9Dim
241.9Dim
251.9Dim
261.9Dim
271.9Dim
282.0Dim
292.0Dim
302.0Dim
312.0Dim
Planning a trip in December

Is December a good time to visit Vila Franca de Xira?

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

4.5
Sightseeing
11th-best month of the year
0.0
Beach & pool
11th-best month of the year

December is a reasonable time to visit Vila Franca de Xira for sightseeing.

What to pack for Vila Franca de Xira in December

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

In December, Vila Franca de Xira sees daytime highs around 15°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Vila Franca de Xira in December

The nearest coast averages about 15°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 38 km away) is warmest in August 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
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May16Cool
Jun17Cool
Jul18Cool
Aug18Cool
Sep18Cool
Oct18Cool
Nov17Cool
Dec15Cool

UV index in Vila Franca de Xira in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Vila Franca de Xira 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
Apr8Very high
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5High
Nov3Moderate
Dec2Low
Location & terrain

Where is Vila Franca de Xira?

Vila Franca de Xira sits at 39.0°N, 9.0°W, 15 m above sea level, in Portugal. The nearest listed city is Vialonga, 12 km away.

Topography around Vila Franca de Xira

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vila Franca de Xira.

Within 3 km, the terrain around Vila Franca de Xira has only modest variations in elevation — a maximum elevation change of 213 m around an average of 61 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 439 m; within 80 km, large variations in elevation — a maximum elevation change of 674 m.

The land around Vila Franca de Xira is covered by grassland (29%) and cropland (28%) within 3 km, grassland (36%) and cropland (29%) within 16 km, and water (33%), grassland (32%) and trees (23%) within 80 km.

3 km
213 m
16 km
439 m
80 km
674 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Vialonga 12 km · Póvoa de Santa Iria 12 km · Santa Iria da Azóia 16 km · Azambuja 17 km · São João da Talha 17 km · Camarate 21 km · Loures 21 km · Sacavém 21 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 Vila Franca de Xira (38.9552°, -8.9897°, elevation 15 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).