Porto de Mós weather in December

In December, Porto de Mós sees average daytime highs of 16°C and overnight lows near 13°C, with 82 mm of rain across 8.3 wet days and about 9.5 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 38% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of December to 9 h 30 min by month's end. Set against the rest of the year, December is Porto de Mós's 12th-clearest and 3rd-windiest month. For the whole year in context, see Porto de Mós's year-round climate.

Daytime high: 16°; 9th warmest
Overnight low: 13°; 4th coldest
Rainfall: 82 mm; 8.3 wet days
Daylight: 9 h 30 min; 7:47 AM – 5:15 PM
Cloud cover: 51%; 12th clearest
Wind: 21 km/h; 3rd windiest
Solar energy: 2.31 kWh/m²
Travel score: 5.3; out of 10

← November Porto de Mós year-round climate January →Best places to visit in December

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 16°C through the month.

A typical December day in Porto de Mós reaches about 16°C in the afternoon and slips back to 13°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 18°C. Set against its neighbours, December runs about 2°C cooler than November and about 1°C warmer than January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16
Avg low (°C)	14	14	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13

	Avg high (°C)	Avg low (°C)
1	16	14
2	16	14
3	16	14
4	16	14
5	16	14
6	16	14
7	16	14
8	16	14
9	16	14
10	16	14
11	16	13
12	16	13
13	16	13
14	16	13
15	16	13
16	16	13
17	16	13
18	16	13
19	16	13
20	16	13
21	16	13
22	16	13
23	16	13
24	16	13
25	16	13
26	16	13
27	16	13
28	16	13
29	16	13
30	16	13
31	16	13

Porto de Mós weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	15° / 12°	54	7.7	9.7	4.9
Feb	15° / 12°	47	6.3	10.6	5.0
Mar	16° / 13°	48	6.6	11.7	5.6
Apr	17° / 14°	37	6.3	12.9	6.1
May	19° / 16°	22	4.1	14	7.3
Jun	21° / 18°	4	0.8	14.5	8.5
Jul	22° / 19°	0	0.1	14.3	9.2
Aug	23° / 19°	2	0.3	13.4	9.2
Sep	22° / 19°	17	2.7	12.3	8.4
Oct	20° / 17°	60	6.8	11	7.1
Nov	18° / 15°	65	7.8	10	6.2
Dec	16° / 13°	82	8.3	9.5	5.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 44%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	59	59	59	59	59	58	58	57	57	57	57	57	56	56	56	56	56	56	55	55	55	55	55	55	55	55	55	55	55	56	56
Cloudier (%)	41	41	41	41	41	42	42	43	43	43	43	43	44	44	44	44	44	44	45	45	45	45	45	45	45	45	45	45	45	44	44

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	59	41
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	57	43
12	57	43
13	56	44
14	56	44
15	56	44
16	56	44
17	56	44
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	55	45
25	55	45
26	55	45
27	55	45
28	55	45
29	55	45
30	56	44
31	56	44

Chance of precipitation in December

Any precipitation

Porto de Mós gets around 82 mm of rain over 8.3 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 28% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	28	27	27	26	26	26	26	26	26	26	26	26	26	27	27	27	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	26
7	26
8	26
9	26
10	26
11	26
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28
31	28

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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	73	73	73	73	72	73	72	72	71	71	71	71	71	72	72	73	73	74	75	76	76	76	77	78	78	78	79	79	80	80	81
Comfortable (%)	24	25	25	25	26	26	27	27	27	27	27	27	27	26	26	25	25	24	23	22	21	21	20	19	19	19	18	18	18	18	17
Humid (%)	3	2	2	2	2	1	1	1	2	2	2	2	2	2	2	2	2	2	2	2	3	3	3	3	3	3	3	3	2	2	2

	Dry (%)	Comfortable (%)	Humid (%)
1	73	24	3
2	73	25	2
3	73	25	2
4	73	25	2
5	72	26	2
6	73	26	1
7	72	27	1
8	72	27	1
9	71	27	2
10	71	27	2
11	71	27	2
12	71	27	2
13	71	27	2
14	72	26	2
15	72	26	2
16	73	25	2
17	73	25	2
18	74	24	2
19	75	23	2
20	76	22	2
21	76	21	3
22	76	21	3
23	77	20	3
24	78	19	3
25	78	19	3
26	78	19	3
27	79	18	3
28	79	18	3
29	80	18	2
30	80	18	2
31	81	17	2

Wind in December

Winds average 21 km/h in December.

Across December, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21
Feels	light breeze	light breeze	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

	Wind speed (km/h)	Feels
1	20	light breeze
2	20	light breeze
3	20	breezy
4	20	breezy
5	20	breezy
6	20	breezy
7	20	breezy
8	20	breezy
9	20	breezy
10	21	breezy
11	21	breezy
12	21	breezy
13	21	breezy
14	21	breezy
15	21	breezy
16	21	breezy
17	21	breezy
18	21	breezy
19	21	breezy
20	21	breezy
21	21	breezy
22	21	breezy
23	21	breezy
24	21	breezy
25	21	breezy
26	21	breezy
27	21	breezy
28	21	breezy
29	21	breezy
30	21	breezy
31	21	breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 36 min at the start of December to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:35 AM to 7:53 AM, and sunset from 5:14 PM to 5:22 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	9.6	9.6	9.6	9.6	9.6	9.6	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.4	9.4	9.4	9.5	9.5	9.5	9.5	9.5	9.5	9.5	9.5
Sunrise (AM)	7:35	7:36	7:37	7:38	7:39	7:40	7:40	7:41	7:42	7:43	7:44	7:44	7:45	7:46	7:46	7:47	7:48	7:48	7:49	7:49	7:50	7:50	7:51	7:51	7:52	7:52	7:52	7:53	7:53	7:53	7:53
Sunset (PM)	5:14	5:14	5:13	5:13	5:13	5:13	5:13	5:13	5:13	5:14	5:14	5:14	5:14	5:14	5:15	5:15	5:15	5:16	5:16	5:16	5:17	5:17	5:18	5:18	5:19	5:19	5:20	5:20	5:21	5:22	5:22

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	9.6	7:35	5:14
2	9.6	7:36	5:14
3	9.6	7:37	5:13
4	9.6	7:38	5:13
5	9.6	7:39	5:13
6	9.6	7:40	5:13
7	9.5	7:40	5:13
8	9.5	7:41	5:13
9	9.5	7:42	5:13
10	9.5	7:43	5:14
11	9.5	7:44	5:14
12	9.5	7:44	5:14
13	9.5	7:45	5:14
14	9.5	7:46	5:14
15	9.5	7:46	5:15
16	9.5	7:47	5:15
17	9.5	7:48	5:15
18	9.5	7:48	5:16
19	9.5	7:49	5:16
20	9.5	7:49	5:16
21	9.4	7:50	5:17
22	9.4	7:50	5:17
23	9.4	7:51	5:18
24	9.5	7:51	5:18
25	9.5	7:52	5:19
26	9.5	7:52	5:19
27	9.5	7:52	5:20
28	9.5	7:53	5:20
29	9.5	7:53	5:21
30	9.5	7:53	5:22
31	9.5	7:53	5:22

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.31 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 7.84 kWh/m² in July across the year — December's 2.31 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	2.5	2.5	2.4	2.4	2.4	2.4	2.4	2.4	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	2.5	Moderate
2	2.5	Moderate
3	2.4	Moderate
4	2.4	Moderate
5	2.4	Moderate
6	2.4	Moderate
7	2.4	Moderate
8	2.4	Moderate
9	2.3	Moderate
10	2.3	Moderate
11	2.3	Moderate
12	2.3	Moderate
13	2.3	Moderate
14	2.3	Moderate
15	2.3	Moderate
16	2.3	Moderate
17	2.3	Moderate
18	2.3	Moderate
19	2.3	Moderate
20	2.3	Moderate
21	2.3	Moderate
22	2.3	Moderate
23	2.3	Moderate
24	2.3	Moderate
25	2.3	Moderate
26	2.3	Moderate
27	2.3	Moderate
28	2.3	Moderate
29	2.3	Moderate
30	2.3	Moderate
31	2.4	Moderate

Planning a trip in December

Is December a good time to visit Porto de Mós?

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

5.3

Sightseeing

10th-best month of the year

0.6

Beach & pool

9th-best month of the year

December is a reasonable time to visit Porto de Mós for sightseeing.

What to pack for Porto de Mós in December

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

In December, Porto de Mós sees daytime highs around 16°C and nights near 13°C. Worth packing: a warm layer, rain gear and a windbreaker. About 8 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Porto de Mós in December

The nearest coast averages about 17°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 20°C and coldest in February near 15°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	16	15	15	16	17	19	19	20	20	19	18	17
Comfort	Cool	Cool	Cool	Cool	Cool	Cool	Cool	Cool	Refreshing	Cool	Cool	Cool

	Sea temperature (°C)	Comfort
Jan	16	Cool
Feb	15	Cool
Mar	15	Cool
Apr	16	Cool
May	17	Cool
Jun	19	Cool
Jul	19	Cool
Aug	20	Cool
Sep	20	Refreshing
Oct	19	Cool
Nov	18	Cool
Dec	17	Cool

UV index in Porto de Mós 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 Porto de Mós peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	7	8	7	9	10	9	6	5	3	2
Level	Moderate	Moderate	High	Very high	Very high	Very high	Very high	Very high	High	High	Moderate	Low

	UV index (midday)	Level
Jan	2	Moderate
Feb	3	Moderate
Mar	7	High
Apr	8	Very high
May	7	Very high
Jun	9	Very high
Jul	10	Very high
Aug	9	Very high
Sep	6	High
Oct	5	High
Nov	3	Moderate
Dec	2	Low

Location & terrain

Where is Porto de Mós?

Porto de Mós sits at 37.1°N, 8.7°W, 18 m above sea level, in Portugal. The nearest listed city is Lagos, 2.0 km away.

Topography around Porto de Mós

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

Within 3 km, the terrain around Porto de Mós has only modest variations in elevation — a maximum elevation change of 106 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 231 m; within 80 km, large variations in elevation — a maximum elevation change of 894 m.

The land around Porto de Mós is covered by water (59%) and grassland (20%) within 3 km, water (54%) and grassland (22%) within 16 km, and water (52%) and grassland (20%) within 80 km.

3 km

106 m

water 59%

16 km

231 m

water 54%

80 km

894 m

water 52%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← November Porto de Mós year-round climate January →Best places to visit in December

December weather nearby: Lagos 2.0 km · Portimão 14 km · Albufeira 38 km · Quarteira 52 km · Loulé 59 km · Faro 68 km · Olhão 75 km · Quelfes 77 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

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 Porto de Mós (37.0853°, -8.6837°, elevation 18 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).

	Avg high (°C)	Avg low (°C)
1	16	14
2	16	14
3	16	14
4	16	14
5	16	14
6	16	14
7	16	14
8	16	14
9	16	14
10	16	14
11	16	13
12	16	13
13	16	13
14	16	13
15	16	13
16	16	13
17	16	13
18	16	13
19	16	13
20	16	13
21	16	13
22	16	13
23	16	13
24	16	13
25	16	13
26	16	13
27	16	13
28	16	13
29	16	13
30	16	13
31	16	13

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	59	41
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	57	43
12	57	43
13	56	44
14	56	44
15	56	44
16	56	44
17	56	44
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	55	45
25	55	45
26	55	45
27	55	45
28	55	45
29	55	45
30	56	44
31	56	44

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	26
7	26
8	26
9	26
10	26
11	26
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	73	24	3
2	73	25	2
3	73	25	2
4	73	25	2
5	72	26	2
6	73	26	1
7	72	27	1
8	72	27	1
9	71	27	2
10	71	27	2
11	71	27	2
12	71	27	2
13	71	27	2
14	72	26	2
15	72	26	2
16	73	25	2
17	73	25	2
18	74	24	2
19	75	23	2
20	76	22	2
21	76	21	3
22	76	21	3
23	77	20	3
24	78	19	3
25	78	19	3
26	78	19	3
27	79	18	3
28	79	18	3
29	80	18	2
30	80	18	2
31	81	17	2

	Avg high (°C)	Avg low (°C)
1	16	14
2	16	14
3	16	14
4	16	14
5	16	14
6	16	14
7	16	14
8	16	14
9	16	14
10	16	14
11	16	13
12	16	13
13	16	13
14	16	13
15	16	13
16	16	13
17	16	13
18	16	13
19	16	13
20	16	13
21	16	13
22	16	13
23	16	13
24	16	13
25	16	13
26	16	13
27	16	13
28	16	13
29	16	13
30	16	13
31	16	13

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	59	41
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	57	43
12	57	43
13	56	44
14	56	44
15	56	44
16	56	44
17	56	44
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	55	45
25	55	45
26	55	45
27	55	45
28	55	45
29	55	45
30	56	44
31	56	44

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	26
7	26
8	26
9	26
10	26
11	26
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	73	24	3
2	73	25	2
3	73	25	2
4	73	25	2
5	72	26	2
6	73	26	1
7	72	27	1
8	72	27	1
9	71	27	2
10	71	27	2
11	71	27	2
12	71	27	2
13	71	27	2
14	72	26	2
15	72	26	2
16	73	25	2
17	73	25	2
18	74	24	2
19	75	23	2
20	76	22	2
21	76	21	3
22	76	21	3
23	77	20	3
24	78	19	3
25	78	19	3
26	78	19	3
27	79	18	3
28	79	18	3
29	80	18	2
30	80	18	2
31	81	17	2

	Avg high (°C)	Avg low (°C)
1	16	14
2	16	14
3	16	14
4	16	14
5	16	14
6	16	14
7	16	14
8	16	14
9	16	14
10	16	14
11	16	13
12	16	13
13	16	13
14	16	13
15	16	13
16	16	13
17	16	13
18	16	13
19	16	13
20	16	13
21	16	13
22	16	13
23	16	13
24	16	13
25	16	13
26	16	13
27	16	13
28	16	13
29	16	13
30	16	13
31	16	13

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	59	41
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	57	43
12	57	43
13	56	44
14	56	44
15	56	44
16	56	44
17	56	44
18	56	44
19	55	45
20	55	45
21	55	45
22	55	45
23	55	45
24	55	45
25	55	45
26	55	45
27	55	45
28	55	45
29	55	45
30	56	44
31	56	44

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	26
7	26
8	26
9	26
10	26
11	26
12	26
13	26
14	27
15	27
16	27
17	28
18	28
19	28
20	28
21	28
22	28
23	28
24	28
25	28
26	28
27	28
28	28
29	28
30	28
31	28

	Dry (%)	Comfortable (%)	Humid (%)
1	73	24	3
2	73	25	2
3	73	25	2
4	73	25	2
5	72	26	2
6	73	26	1
7	72	27	1
8	72	27	1
9	71	27	2
10	71	27	2
11	71	27	2
12	71	27	2
13	71	27	2
14	72	26	2
15	72	26	2
16	73	25	2
17	73	25	2
18	74	24	2
19	75	23	2
20	76	22	2
21	76	21	3
22	76	21	3
23	77	20	3
24	78	19	3
25	78	19	3
26	78	19	3
27	79	18	3
28	79	18	3
29	80	18	2
30	80	18	2
31	81	17	2