Boiro weather in May

In May, Boiro sees average daytime highs of 18°C and overnight lows near 12°C, with 113 mm of rain across 11.8 wet days and about 14.4 hours of daylight. It is the 6th-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 28% 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 54 min by month's end. Set against the rest of the year, May is Boiro's 5th-clearest and 7th-windiest month. For the whole year in context, see Boiro's year-round climate.

Daytime high
18°
6th warmest
Overnight low
12°
7th coldest
Rainfall
113 mm
11.8 wet days
Daylight
14 h 24 min
6:19 AM – 8:45 PM
Cloud cover
58%
5th clearest
Wind
15 km/h
7th windiest
Solar energy
6.02 kWh/m²
Travel score
5.7
out of 10

Boiro is human settlement in Boiro, A Coruña Province, Galicia, Spain.

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

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 Boiro reaches about 18°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, May runs about 2°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11711
21711
31711
41711
51711
61711
71711
81711
91811
101811
111811
121811
131812
141812
151812
161812
171812
181912
191912
201912
211912
221912
231912
241912
251913
261913
272013
282013
292013
302013
312013

Boiro 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 19114.79.23.0
Feb13° / 12311.610.33.5
Mar15° / 13211.811.64.4
Apr16° / 10°12713.413.14.7
May18° / 12°11311.814.45.7
Jun21° / 14°60815.16.9
Jul23° / 16°365.414.87.9
Aug23° / 16°506.713.77.7
Sep22° / 15°828.612.36.9
Oct19° / 13°1921410.85.4
Nov15° / 10°19215.39.64.0
Dec13° / 187158.93.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24060
34060
44060
54060
64060
74060
84060
94060
104060
114159
124159
134159
144258
154357
164357
174456
184654
194753
204753
214753
224852
234951
244951
254951
264951
275050
285050
294951
304951
314852

Chance of precipitation in May

Any precipitation

Boiro gets around 113 mm of rain over 11.8 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 38% 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 (%)
143
243
342
442
541
641
741
841
940
1040
1140
1240
1339
1439
1539
1638
1738
1838
1938
2037
2137
2237
2336
2436
2536
2635
2735
2834
2934
3034
3134

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 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
190100
289110
388120
488120
587130
687130
786140
886140
985150
1085150
1184160
1283170
1383170
1482180
1582180
1681190
1780200
1879210
1978220
2076231
2174251
2273261
2371272
2470282
2569292
2667303
2766313
2865323
2964333
3063334
3162344

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 6:38 AM to 6:07 AM, and sunset from 8:28 PM to 8:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.86:388:28
213.96:368:29
313.96:358:30
414.06:338:31
514.06:328:32
614.06:318:34
714.16:298:35
814.16:288:36
914.26:278:37
1014.26:268:38
1114.26:258:39
1214.36:238:40
1314.36:228:41
1414.46:218:42
1514.46:208:43
1614.46:198:45
1714.56:188:46
1814.56:178:47
1914.56:168:48
2014.66:158:49
2114.66:148:50
2214.66:138:51
2314.76:128:52
2414.76:128:53
2514.76:118:54
2614.76:108:55
2714.86:098:55
2814.86:098:56
2914.86:088:57
3014.86:078:58
3114.96:078:59

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 1.42 kWh/m² to a high of 6.65 kWh/m² in June across the year — May's 6.02 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.9Bright
145.9Bright
156.0Bright
166.0Intense
176.1Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.4Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in May

Hazard calendar for Boiro

In seasonPeak

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

Boiro'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 Boiro?

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
2.1
Beach & pool
6th-best month of the year

May is a reasonable time to visit Boiro for sightseeing.

What to pack for Boiro in May

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

In May, Boiro sees daytime highs around 18°C and nights near 12°C. Pack sun protection. Worth having: rain gear. About 12 days see rain.

sun protectionrain gear

Sea temperature near Boiro in May

The nearest coast averages about 15°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 20 km away) is warmest in August 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
Mar13Bracing
Apr14Bracing
May15Cool
Jun16Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov16Cool
Dec14Bracing

UV index in Boiro in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boiro peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Boiro?

Boiro sits at 42.6°N, 8.9°W, 29 m above sea level, in Spain. The nearest listed city is Vilagarcía de Arousa, 11 km away.

Topography around Boiro

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

Within 3 km, the terrain around Boiro has significant variations in elevation — a maximum elevation change of 255 m around an average of 57 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 685 m; within 80 km, large variations in elevation — a maximum elevation change of 1,141 m.

The land around Boiro is covered by trees (46%), water (22%) and grassland (21%) within 3 km, trees (42%) and water (32%) within 16 km, and trees (44%) and water (33%) within 80 km.

3 km
255 m
16 km
685 m
80 km
1,141 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Vilagarcía de Arousa 11 km · Santa Uxía de Ribeira 14 km · Poio 28 km · Sanxenxo 28 km · Pontevedra 31 km · Teo 32 km · Marín 32 km · A Estrada 33 km

Spain travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$38,627
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 540
Religion
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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 Boiro (42.6472°, -8.8846°, elevation 29 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).