Sintra weather in January

In January, Sintra sees average daytime highs of 14°C and overnight lows near 12°C, with 81 mm of rain across 10.2 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 38% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of January to 10 hours by month's end. Set against the rest of the year, January is Sintra's 11th-clearest and 8th-windiest month. For the whole year in context, see Sintra's year-round climate.

Daytime high: 14°; 11th warmest
Overnight low: 12°; 2nd coldest
Rainfall: 81 mm; 10.2 wet days
Daylight: 9 h 36 min; 8:00 AM – 5:34 PM
Cloud cover: 53%; 11th clearest
Wind: 24 km/h; 8th windiest
Solar energy: 2.3 kWh/m²
Travel score: 4.3; out of 10

Sintra is town seat of Sintra municipality, Lisbon District, Portugal.

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

← December Sintra year-round climate February →Best places to visit in January

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 14°C through the month.

A typical January day in Sintra reaches about 14°C in the afternoon and slips back to 12°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 16°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

	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)	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14
Avg low (°C)	13	13	13	13	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12

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

Sintra weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	14° / 12°	81	10.2	9.6	4.3
Feb	14° / 12°	60	8.2	10.5	4.3
Mar	15° / 13°	56	8.1	11.7	4.7
Apr	15° / 14°	50	7.8	13	5.1
May	17° / 15°	40	5.4	14.1	6.1
Jun	18° / 17°	8	1.8	14.7	7.5
Jul	19° / 18°	2	0.6	14.4	8.2
Aug	19° / 18°	4	0.8	13.5	8.2
Sep	19° / 18°	27	3.8	12.3	7.5
Oct	19° / 17°	80	9	11	6.3
Nov	17° / 15°	95	10.6	9.9	5.3
Dec	15° / 13°	89	10.6	9.3	4.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

	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 (%)	51	51	51	51	52	51	51	51	52	52	53	53	53	53	53	54	54	55	55	55	55	56	57	57	57	57	58	58	58	58	57
Cloudier (%)	49	49	49	49	48	49	49	49	48	48	47	47	47	47	47	46	46	45	45	45	45	44	43	43	43	43	42	42	42	42	43

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	52	48
6	51	49
7	51	49
8	51	49
9	52	48
10	52	48
11	53	47
12	53	47
13	53	47
14	53	47
15	53	47
16	54	46
17	54	46
18	55	45
19	55	45
20	55	45
21	55	45
22	56	44
23	57	43
24	57	43
25	57	43
26	57	43
27	58	42
28	58	42
29	58	42
30	58	42
31	57	43

Chance of precipitation in January

Any precipitation

Sintra gets around 81 mm of rain over 10.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 37% on the wettest days. The odds ease toward the end of the month.

	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 (%)	37	37	37	37	37	36	36	36	35	35	34	34	33	33	32	32	31	31	31	30	30	30	30	30	30	30	30	30	30	30	30

	Rain chance (%)
1	37
2	37
3	37
4	37
5	37
6	36
7	36
8	36
9	35
10	35
11	34
12	34
13	33
14	33
15	32
16	32
17	31
18	31
19	31
20	30
21	30
22	30
23	30
24	30
25	30
26	30
27	30
28	30
29	30
30	30
31	30

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 90% 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 (%)	83	83	83	83	84	85	85	86	87	88	89	89	90	91	91	92	92	93	93	93	93	93	93	93	93	93	93	93	93	92	92
Comfortable (%)	17	17	17	17	16	15	15	14	13	12	11	11	10	9	9	8	8	7	7	7	7	7	7	7	7	7	7	7	7	8	8

	Dry (%)	Comfortable (%)
1	83	17
2	83	17
3	83	17
4	83	17
5	84	16
6	85	15
7	85	15
8	86	14
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	93	7
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	93	7
28	93	7
29	93	7
30	92	8
31	92	8

Wind in January

Winds average 24 km/h in January.

Across January, daily wind ranges from about 23 km/h on the calmest days to 24 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)	24	24	24	24	24	24	23	23	23	23	23	23	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24	24	24	24	24
Feels	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	breezy	breezy

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

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 18 min at the start of January to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 8:01 AM to 7:52 AM, and sunset from 5:20 PM to 5:50 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)	9.3	9.3	9.3	9.4	9.4	9.4	9.4	9.4	9.4	9.4	9.5	9.5	9.5	9.5	9.5	9.6	9.6	9.6	9.6	9.7	9.7	9.7	9.7	9.8	9.8	9.8	9.8	9.9	9.9	9.9	10.0
Sunrise (AM)	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:01	8:00	8:00	8:00	8:00	7:59	7:59	7:58	7:58	7:57	7:57	7:56	7:56	7:55	7:55	7:54	7:53	7:53	7:52
Sunset (PM)	5:20	5:21	5:22	5:23	5:24	5:24	5:25	5:26	5:27	5:28	5:29	5:30	5:31	5:32	5:33	5:34	5:35	5:36	5:37	5:38	5:39	5:40	5:41	5:42	5:43	5:44	5:45	5:47	5:48	5:49	5:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	9.3	8:01	5:20
2	9.3	8:01	5:21
3	9.3	8:01	5:22
4	9.4	8:01	5:23
5	9.4	8:01	5:24
6	9.4	8:01	5:24
7	9.4	8:01	5:25
8	9.4	8:01	5:26
9	9.4	8:01	5:27
10	9.4	8:01	5:28
11	9.5	8:01	5:29
12	9.5	8:01	5:30
13	9.5	8:01	5:31
14	9.5	8:00	5:32
15	9.5	8:00	5:33
16	9.6	8:00	5:34
17	9.6	8:00	5:35
18	9.6	7:59	5:36
19	9.6	7:59	5:37
20	9.7	7:58	5:38
21	9.7	7:58	5:39
22	9.7	7:57	5:40
23	9.7	7:57	5:41
24	9.8	7:56	5:42
25	9.8	7:56	5:43
26	9.8	7:55	5:44
27	9.8	7:55	5:45
28	9.9	7:54	5:47
29	9.9	7:53	5:48
30	9.9	7:53	5:49
31	10.0	7:52	5:50

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.3 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 7.51 kWh/m² in July across the year — January's 2.3 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)	2.0	2.0	2.0	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.2	2.2	2.2	2.2	2.3	2.3	2.3	2.4	2.4	2.4	2.4	2.5	2.5	2.5	2.5	2.6	2.6	2.6	2.7	2.7	2.7
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	2.0	Moderate
2	2.0	Moderate
3	2.0	Moderate
4	2.1	Moderate
5	2.1	Moderate
6	2.1	Moderate
7	2.1	Moderate
8	2.1	Moderate
9	2.1	Moderate
10	2.1	Moderate
11	2.2	Moderate
12	2.2	Moderate
13	2.2	Moderate
14	2.2	Moderate
15	2.3	Moderate
16	2.3	Moderate
17	2.3	Moderate
18	2.4	Moderate
19	2.4	Moderate
20	2.4	Moderate
21	2.4	Moderate
22	2.5	Moderate
23	2.5	Moderate
24	2.5	Moderate
25	2.5	Moderate
26	2.6	Moderate
27	2.6	Moderate
28	2.6	Moderate
29	2.7	Moderate
30	2.7	Moderate
31	2.7	Moderate

Planning a trip in January

Hazard calendar for Sintra

In seasonPeak

In January, Sintra sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Sintra'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 January a good time to visit Sintra?

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

4.3

Sightseeing

11th-best month of the year

0.0

Beach & pool

11th-best month of the year

January is a reasonable time to visit Sintra for sightseeing.

What to pack for Sintra in January

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

In January, Sintra sees daytime highs around 14°C and nights near 12°C. Worth packing: a warm layer, rain gear and a windbreaker. About 10 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Sintra in January

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

The sea at the nearest coast (about 20 km away) is warmest in September at about 19°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)	15	15	15	15	16	18	18	19	19	18	17	16
Comfort	Cool	Bracing	Bracing	Cool	Cool	Cool	Cool	Cool	Cool	Cool	Cool	Cool

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

UV index in Sintra in January

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Sintra peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

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

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

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

Location & terrain

Where is Sintra?

Sintra sits at 38.8°N, 9.4°W, 197 m above sea level, in Portugal. The nearest listed city is Algueirão, 3.0 km away.

Topography around Sintra

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

Within 3 km, the terrain around Sintra has significant variations in elevation — a maximum elevation change of 460 m around an average of 198 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 513 m; within 80 km, large variations in elevation — a maximum elevation change of 651 m.

The land around Sintra is covered by trees (49%), grassland (27%) and artificial surfaces (22%) within 3 km, water (28%), grassland (27%) and trees (24%) within 16 km, and water (47%) and grassland (24%) within 80 km.

3 km

460 m

trees 49%

16 km

513 m

water 28%

80 km

651 m

water 47%

treesshrubsgrasslandcroplandartificial surfaceswater

← December Sintra year-round climate February →Best places to visit in January

January weather nearby: Algueirão 3.0 km · Rio de Mouro 6.0 km · Cacém 8.0 km · Alcabideche 8.0 km · Massamá 10 km · Belas 10 km · Estoril 11 km · Monte Estoril 11 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 Sintra (38.801°, -9.3783°, elevation 197 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	15	13
2	15	13
3	15	13
4	15	13
5	15	12
6	15	12
7	14	12
8	14	12
9	14	12
10	14	12
11	14	12
12	14	12
13	14	12
14	14	12
15	14	12
16	14	12
17	14	12
18	14	12
19	14	12
20	14	12
21	14	12
22	14	12
23	14	12
24	14	12
25	14	12
26	14	12
27	14	12
28	14	12
29	14	12
30	14	12
31	14	12

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	52	48
6	51	49
7	51	49
8	51	49
9	52	48
10	52	48
11	53	47
12	53	47
13	53	47
14	53	47
15	53	47
16	54	46
17	54	46
18	55	45
19	55	45
20	55	45
21	55	45
22	56	44
23	57	43
24	57	43
25	57	43
26	57	43
27	58	42
28	58	42
29	58	42
30	58	42
31	57	43

	Rain chance (%)
1	37
2	37
3	37
4	37
5	37
6	36
7	36
8	36
9	35
10	35
11	34
12	34
13	33
14	33
15	32
16	32
17	31
18	31
19	31
20	30
21	30
22	30
23	30
24	30
25	30
26	30
27	30
28	30
29	30
30	30
31	30

	Dry (%)	Comfortable (%)
1	83	17
2	83	17
3	83	17
4	83	17
5	84	16
6	85	15
7	85	15
8	86	14
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	93	7
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	93	7
28	93	7
29	93	7
30	92	8
31	92	8

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

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	52	48
6	51	49
7	51	49
8	51	49
9	52	48
10	52	48
11	53	47
12	53	47
13	53	47
14	53	47
15	53	47
16	54	46
17	54	46
18	55	45
19	55	45
20	55	45
21	55	45
22	56	44
23	57	43
24	57	43
25	57	43
26	57	43
27	58	42
28	58	42
29	58	42
30	58	42
31	57	43

	Rain chance (%)
1	37
2	37
3	37
4	37
5	37
6	36
7	36
8	36
9	35
10	35
11	34
12	34
13	33
14	33
15	32
16	32
17	31
18	31
19	31
20	30
21	30
22	30
23	30
24	30
25	30
26	30
27	30
28	30
29	30
30	30
31	30

	Dry (%)	Comfortable (%)
1	83	17
2	83	17
3	83	17
4	83	17
5	84	16
6	85	15
7	85	15
8	86	14
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	93	7
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	93	7
28	93	7
29	93	7
30	92	8
31	92	8

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

	Clearer (%)	Cloudier (%)
1	51	49
2	51	49
3	51	49
4	51	49
5	52	48
6	51	49
7	51	49
8	51	49
9	52	48
10	52	48
11	53	47
12	53	47
13	53	47
14	53	47
15	53	47
16	54	46
17	54	46
18	55	45
19	55	45
20	55	45
21	55	45
22	56	44
23	57	43
24	57	43
25	57	43
26	57	43
27	58	42
28	58	42
29	58	42
30	58	42
31	57	43

	Rain chance (%)
1	37
2	37
3	37
4	37
5	37
6	36
7	36
8	36
9	35
10	35
11	34
12	34
13	33
14	33
15	32
16	32
17	31
18	31
19	31
20	30
21	30
22	30
23	30
24	30
25	30
26	30
27	30
28	30
29	30
30	30
31	30

	Dry (%)	Comfortable (%)
1	83	17
2	83	17
3	83	17
4	83	17
5	84	16
6	85	15
7	85	15
8	86	14
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	93	7
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	93	7
28	93	7
29	93	7
30	92	8
31	92	8