Sesimbra weather in May

In May, Sesimbra sees average daytime highs of 20°C and overnight lows near 15°C, with 35 mm of rain across 5.1 wet days and about 14.1 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 51% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Sesimbra's 5th-clearest and 6th-windiest month. For the whole year in context, see Sesimbra's year-round climate.

Daytime high: 20°; 6th warmest
Overnight low: 15°; 7th coldest
Rainfall: 35 mm; 5.1 wet days
Daylight: 14 h 06 min; 5:30 AM – 7:35 PM
Cloud cover: 42%; 5th clearest
Wind: 17 km/h; 6th windiest
Solar energy: 6.89 kWh/m²
Travel score: 7.3; out of 10

Sesimbra is human settlement in Portugal.

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

← April Sesimbra year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 21°C by the end.

A typical May day in Sesimbra reaches about 20°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, May runs about 2°C warmer than April and about 3°C cooler than June.

	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)	19	19	19	19	19	19	19	19	19	19	20	20	20	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21
Avg low (°C)	13	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15	15	15	15	15	15	15	15	16	16

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

Sesimbra weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	14° / 10°	63	8.4	9.6	4.6
Feb	15° / 10°	48	6.6	10.5	4.9
Mar	17° / 12°	48	7	11.7	5.9
Apr	18° / 13°	45	7.4	13	6.3
May	20° / 15°	35	5.1	14.1	7.3
Jun	23° / 17°	8	1.5	14.6	8.7
Jul	25° / 18°	1	0.4	14.4	9.4
Aug	25° / 18°	3	0.6	13.5	9.2
Sep	23° / 18°	25	3.6	12.3	8.5
Oct	21° / 16°	70	8.1	11	6.9
Nov	17° / 13°	74	8.8	9.9	5.9
Dec	15° / 11°	77	9.1	9.4	4.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 31%. 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 (%)	62	63	64	64	64	64	65	65	66	66	67	67	68	68	69	69	70	71	71	72	72	73	73	74	74	74	74	74	74	74	73
Cloudier (%)	38	37	36	36	36	36	35	35	34	34	33	33	32	32	31	31	30	29	29	28	28	27	27	26	26	26	26	26	26	26	27

	Clearer (%)	Cloudier (%)
1	62	38
2	63	37
3	64	36
4	64	36
5	64	36
6	64	36
7	65	35
8	65	35
9	66	34
10	66	34
11	67	33
12	67	33
13	68	32
14	68	32
15	69	31
16	69	31
17	70	30
18	71	29
19	71	29
20	72	28
21	72	28
22	73	27
23	73	27
24	74	26
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	73	27

Chance of precipitation in May

Any precipitation

Sesimbra gets around 35 mm of rain over 5.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 22% 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 (%)	22	22	21	21	21	20	20	20	19	19	19	18	18	18	18	17	17	16	16	16	15	15	14	14	13	12	12	11	11	10	10

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

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 60% 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 (%)	77	76	75	75	74	73	72	71	69	68	67	66	65	63	62	61	59	58	57	56	54	53	52	51	49	48	46	45	44	43	42
Comfortable (%)	22	23	24	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	38	39	40	40	41	41	42	43	43	44	44	45	46
Humid (%)	1	1	1	1	1	1	1	1	2	2	2	2	2	3	3	3	4	4	5	5	6	7	7	8	9	9	10	11	11	12	12

	Dry (%)	Comfortable (%)	Humid (%)
1	77	22	1
2	76	23	1
3	75	24	1
4	75	24	1
5	74	25	1
6	73	26	1
7	72	27	1
8	71	28	1
9	69	29	2
10	68	30	2
11	67	31	2
12	66	32	2
13	65	33	2
14	63	34	3
15	62	35	3
16	61	36	3
17	59	37	4
18	58	38	4
19	57	38	5
20	56	39	5
21	54	40	6
22	53	40	7
23	52	41	7
24	51	41	8
25	49	42	9
26	48	43	9
27	46	43	10
28	45	44	11
29	44	44	11
30	43	45	12
31	42	46	12

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 17 km/h on the calmest days to 17 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)	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:46 AM to 5:20 AM, and sunset from 7:21 PM to 7:47 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)	13.6	13.6	13.7	13.7	13.7	13.8	13.8	13.8	13.9	13.9	13.9	14.0	14.0	14.0	14.1	14.1	14.1	14.1	14.2	14.2	14.2	14.2	14.3	14.3	14.3	14.3	14.4	14.4	14.4	14.4	14.5
Sunrise (AM)	5:46	5:45	5:44	5:43	5:41	5:40	5:39	5:38	5:37	5:36	5:35	5:34	5:33	5:32	5:31	5:30	5:29	5:29	5:28	5:27	5:26	5:25	5:25	5:24	5:23	5:23	5:22	5:22	5:21	5:21	5:20
Sunset (PM)	7:21	7:22	7:23	7:24	7:25	7:26	7:27	7:28	7:29	7:30	7:30	7:31	7:32	7:33	7:34	7:35	7:36	7:37	7:38	7:39	7:39	7:40	7:41	7:42	7:43	7:44	7:44	7:45	7:46	7:47	7:47

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.6	5:46	7:21
2	13.6	5:45	7:22
3	13.7	5:44	7:23
4	13.7	5:43	7:24
5	13.7	5:41	7:25
6	13.8	5:40	7:26
7	13.8	5:39	7:27
8	13.8	5:38	7:28
9	13.9	5:37	7:29
10	13.9	5:36	7:30
11	13.9	5:35	7:30
12	14.0	5:34	7:31
13	14.0	5:33	7:32
14	14.0	5:32	7:33
15	14.1	5:31	7:34
16	14.1	5:30	7:35
17	14.1	5:29	7:36
18	14.1	5:29	7:37
19	14.2	5:28	7:38
20	14.2	5:27	7:39
21	14.2	5:26	7:39
22	14.2	5:25	7:40
23	14.3	5:25	7:41
24	14.3	5:24	7:42
25	14.3	5:23	7:43
26	14.3	5:23	7:44
27	14.4	5:22	7:44
28	14.4	5:22	7:45
29	14.4	5:21	7:46
30	14.4	5:21	7:47
31	14.5	5:20	7:47

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.89 kWh/m².

For context, solar energy here swings from a low near 2.08 kWh/m² to a high of 7.69 kWh/m² in July across the year — May's 6.89 kWh/m² sits near the top of that range.

	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)	6.5	6.5	6.5	6.5	6.6	6.6	6.6	6.7	6.7	6.7	6.7	6.8	6.8	6.8	6.9	6.9	6.9	7.0	7.0	7.0	7.1	7.1	7.1	7.1	7.1	7.2	7.2	7.2	7.2	7.2	7.3
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.5	Intense
2	6.5	Intense
3	6.5	Intense
4	6.5	Intense
5	6.6	Intense
6	6.6	Intense
7	6.6	Intense
8	6.7	Intense
9	6.7	Intense
10	6.7	Intense
11	6.7	Intense
12	6.8	Intense
13	6.8	Intense
14	6.8	Intense
15	6.9	Intense
16	6.9	Intense
17	6.9	Intense
18	7.0	Intense
19	7.0	Intense
20	7.0	Intense
21	7.1	Intense
22	7.1	Intense
23	7.1	Intense
24	7.1	Intense
25	7.1	Intense
26	7.2	Intense
27	7.2	Intense
28	7.2	Intense
29	7.2	Intense
30	7.2	Intense
31	7.3	Intense

Planning a trip in May

Is May a good time to visit Sesimbra?

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

7.3

Sightseeing

5th-best month of the year

3.9

Beach & pool

6th-best month of the year

May is one of the better times to visit Sesimbra for general sightseeing.

What to pack for Sesimbra in May

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

In May, Sesimbra sees daytime highs around 20°C and nights near 15°C. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near Sesimbra in May

The nearest coast averages about 17°C in May — 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 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	16	17	18	19	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	16	Cool
May	17	Cool
Jun	18	Cool
Jul	19	Cool
Aug	19	Cool
Sep	19	Cool
Oct	18	Cool
Nov	17	Cool
Dec	16	Cool

UV index in Sesimbra in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sesimbra peaks around July 15 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 9 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	8	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	6	High
Apr	8	Very high
May	7	Very high
Jun	9	Very high
Jul	9	Very high
Aug	8	Very high
Sep	6	High
Oct	5	High
Nov	3	Moderate
Dec	2	Low

Location & terrain

Where is Sesimbra?

Sesimbra sits at 38.4°N, 9.1°W, 26 m above sea level, in Portugal. The nearest listed city is Azeitão, 11 km away.

Topography around Sesimbra

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

Within 3 km, the terrain around Sesimbra has significant variations in elevation — a maximum elevation change of 319 m around an average of 107 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 492 m; within 80 km, significant variations in elevation — a maximum elevation change of 594 m.

The land around Sesimbra is covered by water (34%), grassland (24%) and trees (21%) within 3 km, water (62%) within 16 km, and water (41%) and grassland (32%) within 80 km.

3 km

319 m

water 34%

16 km

492 m

water 62%

80 km

594 m

water 41%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← April Sesimbra year-round climate June →Best places to visit in May

May weather nearby: Azeitão 11 km · Quinta Do Conde 14 km · Arrentela 20 km · Setúbal 21 km · Amora 21 km · Charneca de Caparica 21 km · Corroios 22 km · Palmela 22 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 Sesimbra (38.4445°, -9.1015°, elevation 26 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	19	13
2	19	14
3	19	14
4	19	14
5	19	14
6	19	14
7	19	14
8	19	14
9	19	14
10	19	14
11	20	14
12	20	14
13	20	14
14	20	14
15	20	14
16	20	14
17	20	15
18	20	15
19	20	15
20	20	15
21	21	15
22	21	15
23	21	15
24	21	15
25	21	15
26	21	15
27	21	15
28	21	15
29	21	15
30	21	16
31	21	16

	Clearer (%)	Cloudier (%)
1	62	38
2	63	37
3	64	36
4	64	36
5	64	36
6	64	36
7	65	35
8	65	35
9	66	34
10	66	34
11	67	33
12	67	33
13	68	32
14	68	32
15	69	31
16	69	31
17	70	30
18	71	29
19	71	29
20	72	28
21	72	28
22	73	27
23	73	27
24	74	26
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	73	27

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

	Dry (%)	Comfortable (%)	Humid (%)
1	77	22	1
2	76	23	1
3	75	24	1
4	75	24	1
5	74	25	1
6	73	26	1
7	72	27	1
8	71	28	1
9	69	29	2
10	68	30	2
11	67	31	2
12	66	32	2
13	65	33	2
14	63	34	3
15	62	35	3
16	61	36	3
17	59	37	4
18	58	38	4
19	57	38	5
20	56	39	5
21	54	40	6
22	53	40	7
23	52	41	7
24	51	41	8
25	49	42	9
26	48	43	9
27	46	43	10
28	45	44	11
29	44	44	11
30	43	45	12
31	42	46	12

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

	Clearer (%)	Cloudier (%)
1	62	38
2	63	37
3	64	36
4	64	36
5	64	36
6	64	36
7	65	35
8	65	35
9	66	34
10	66	34
11	67	33
12	67	33
13	68	32
14	68	32
15	69	31
16	69	31
17	70	30
18	71	29
19	71	29
20	72	28
21	72	28
22	73	27
23	73	27
24	74	26
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	73	27

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

	Dry (%)	Comfortable (%)	Humid (%)
1	77	22	1
2	76	23	1
3	75	24	1
4	75	24	1
5	74	25	1
6	73	26	1
7	72	27	1
8	71	28	1
9	69	29	2
10	68	30	2
11	67	31	2
12	66	32	2
13	65	33	2
14	63	34	3
15	62	35	3
16	61	36	3
17	59	37	4
18	58	38	4
19	57	38	5
20	56	39	5
21	54	40	6
22	53	40	7
23	52	41	7
24	51	41	8
25	49	42	9
26	48	43	9
27	46	43	10
28	45	44	11
29	44	44	11
30	43	45	12
31	42	46	12

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

	Clearer (%)	Cloudier (%)
1	62	38
2	63	37
3	64	36
4	64	36
5	64	36
6	64	36
7	65	35
8	65	35
9	66	34
10	66	34
11	67	33
12	67	33
13	68	32
14	68	32
15	69	31
16	69	31
17	70	30
18	71	29
19	71	29
20	72	28
21	72	28
22	73	27
23	73	27
24	74	26
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	73	27

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

	Dry (%)	Comfortable (%)	Humid (%)
1	77	22	1
2	76	23	1
3	75	24	1
4	75	24	1
5	74	25	1
6	73	26	1
7	72	27	1
8	71	28	1
9	69	29	2
10	68	30	2
11	67	31	2
12	66	32	2
13	65	33	2
14	63	34	3
15	62	35	3
16	61	36	3
17	59	37	4
18	58	38	4
19	57	38	5
20	56	39	5
21	54	40	6
22	53	40	7
23	52	41	7
24	51	41	8
25	49	42	9
26	48	43	9
27	46	43	10
28	45	44	11
29	44	44	11
30	43	45	12
31	42	46	12