Cabeceiras de Basto weather in May

In May, Cabeceiras de Basto sees average daytime highs of 19°C and overnight lows near 9°C, with 107 mm of rain across 12.6 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 29% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 48 min by month's end. Set against the rest of the year, May is Cabeceiras de Basto's 5th-clearest and 8th-windiest month. For the whole year in context, see Cabeceiras de Basto's year-round climate.

Daytime high
19°
5th warmest
Overnight low
7th coldest
Rainfall
107 mm
12.6 wet days
Daylight
14 h 18 min
5:18 AM – 7:38 PM
Cloud cover
58%
5th clearest
Wind
8 km/h
8th windiest
Solar energy
6.02 kWh/m²
Travel score
5.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 20°C by the end.

A typical May day in Cabeceiras de Basto reaches about 19°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 25°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1178
2178
3178
4178
5178
6178
7188
8188
9189
10189
11189
12189
13189
14189
15199
16199
17199
181910
191910
201910
211910
222010
232010
242010
252010
262011
272011
282011
292011
302111
312111

Cabeceiras de Basto weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 19012.70.99.32.1
Feb12° / 1239.80.910.32.9
Mar14° / 14011.40.211.74.1
Apr16° / 13113.30.113.14.5
May19° / 10712.6014.35.7
Jun22° / 12°517.4014.97.3
Jul25° / 14°284.4014.78.2
Aug26° / 14°374.7013.78.1
Sep22° / 12°757.3012.37.4
Oct18° / 10°19212.7010.95.3
Nov13° / 18413.10.29.73.3
Dec10° / 20212.60.49.12.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44060
54159
64159
74159
84159
94159
104159
114159
124159
134258
144357
154357
164456
174555
184654
194753
204852
214852
224852
234951
245050
255050
265248
275248
285248
295347
305347
315347

Chance of precipitation in May

Any precipitation

Cabeceiras de Basto gets around 107 mm of rain over 12.6 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 40% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
343
443
543
643
743
843
943
1043
1143
1243
1343
1442
1542
1642
1741
1841
1940
2040
2139
2239
2339
2438
2538
2637
2737
2836
2936
3035
3135

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4982
5982
6973
7973
8973
9964
10964
11955
12955
13946
14946
15937
16937
17928
18928
19919
20919
219010
228911
238812
248713
258713
268614
278515
288416
298416
308317
318218

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
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
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:36 AM to 5:07 AM, and sunset from 7:22 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:367:22
213.85:357:23
313.85:347:24
413.95:327:25
513.95:317:26
614.05:307:28
714.05:287:29
814.05:277:30
914.15:267:31
1014.15:257:32
1114.25:247:33
1214.25:237:34
1314.25:217:35
1414.35:207:36
1514.35:197:37
1614.35:187:38
1714.45:177:39
1814.45:167:40
1914.45:167:41
2014.55:157:42
2114.55:147:43
2214.55:137:44
2314.55:127:45
2414.65:117:46
2514.65:117:47
2614.65:107:48
2714.75:097:49
2814.75:097:49
2914.75:087:50
3014.75:077:51
3114.85:077:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.02 kWh/m².

For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 7.19 kWh/m² in July across the year — May's 6.02 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.9Bright
135.9Bright
146.0Bright
156.0Bright
166.0Intense
176.1Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
316.5Intense
Planning a trip in May

Hazard calendar for Cabeceiras de Basto

In seasonPeak

In May, Cabeceiras de Basto sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Cabeceiras de Basto'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 May a good time to visit Cabeceiras de Basto?

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

5.7
Sightseeing
5th-best month of the year
2.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Cabeceiras de Basto for sightseeing.

What to pack for Cabeceiras de Basto in May

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

In May, Cabeceiras de Basto sees daytime highs around 19°C and nights near 9°C. Pack sun protection. Worth having: rain gear. About 13 days see rain.

sun protectionrain gear

Sea temperature near Cabeceiras de Basto in May

The nearest coast averages about 16°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in September at about 17°C and coldest in February near 13°C.

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

12°14°16°18°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr14Bracing
May16Cool
Jun17Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov16Cool
Dec14Bracing

UV index in Cabeceiras de Basto 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 Cabeceiras de Basto peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 12UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Cabeceiras de Basto in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Cabeceiras de Basto is worst in August — around 25 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodAug 2425 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar14Moderate
Apr12Moderate
May8Good
Jun9Good
Jul9Good
Aug25Moderate
Sep24Moderate
Oct18Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Cabeceiras de Basto?

Cabeceiras de Basto sits at 41.5°N, 8.0°W, 295 m above sea level, in Portugal. The nearest listed city is Fafe, 17 km away.

Topography around Cabeceiras de Basto

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

Within 3 km, the terrain around Cabeceiras de Basto has significant variations in elevation — a maximum elevation change of 452 m around an average of 358 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,159 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,517 m.

The land around Cabeceiras de Basto is covered by trees (55%) and grassland (34%) within 3 km, trees (53%) and grassland (43%) within 16 km, and trees (44%) and grassland (40%) within 80 km.

3 km
452 m
16 km
1,159 m
80 km
1,517 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Fafe 17 km · Felgueiras 24 km · Guimarães 27 km · Vila Real 31 km · Bairro Novo 35 km · Braga 36 km · Baião 39 km · Paredes 45 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 Cabeceiras de Basto (41.5143°, -7.9894°, elevation 295 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. 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).