San Isidro weather in May

In May, San Isidro sees average daytime highs of 19°C and overnight lows near 17°C, with 24 mm of rain across 6.2 wet days and about 13.4 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 67% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 36 min by month's end. Set against the rest of the year, May is San Isidro's 5th-clearest and 11th-windiest month. For the whole year in context, see San Isidro's year-round climate.

Daytime high
19°
7th warmest
Overnight low
17°
6th coldest
Rainfall
24 mm
6.2 wet days
Daylight
13 h 24 min
6:21 AM – 7:44 PM
Cloud cover
30%
5th clearest
Wind
12 km/h
11th windiest
Solar energy
7.43 kWh/m²
Travel score
7.3
out of 10

San Isidro is human settlement in Spain.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical May day in San Isidro reaches about 19°C in the afternoon and slips back to 17°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, May runs about 1°C warmer than April and about 2°C cooler than June.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
11917
21917
31917
41917
51917
61917
71917
81917
91917
101917
111917
121917
131917
141917
151917
161917
171918
181918
192018
202018
212018
222018
232018
242018
252018
262018
272018
282018
292018
302018
312018

San Isidro weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 16°335.910.46.6
Feb17° / 16°376.2116.6
Mar18° / 16°39711.86.7
Apr18° / 16°357.512.76.7
May19° / 17°246.213.47.3
Jun21° / 19°123.313.78.3
Jul23° / 21°10.413.69.6
Aug24° / 22°31139.5
Sep23° / 21°204.312.28.4
Oct22° / 20°428.711.37.3
Nov20° / 19°347.210.67.0
Dec19° / 17°467.310.36.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18020
28119
38119
48119
58218
68218
78218
88317
98317
108416
118416
128515
138515
148614
158614
168614
178614
188614
198713
208713
218713
228713
238713
248911
258911
268911
278911
289010
299010
309010
319010

Chance of precipitation in May

Any precipitation

San Isidro gets around 24 mm of rain over 6.2 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 19% and peaks near 22% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
219
319
420
520
621
721
821
922
1022
1122
1221
1321
1421
1521
1621
1720
1820
1920
2020
2119
2219
2318
2418
2518
2617
2717
2816
2916
3016
3115

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12955160
22855170
32756170
42656180
52556190
62456200
72356210
82256220
92156230
102056240
111956250
121856260
131757260
141756270
151656280
161557280
171457290
181456300
191356310
201256320
211156330
221056340
23956350
24856360
25855370
26754390
27654400
28552421
29550441
30449461
31347481

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 6:32 AM to 6:15 AM, and sunset from 7:35 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:327:35
213.16:317:36
313.16:307:36
413.16:297:37
513.26:287:38
613.26:287:38
713.26:277:39
813.26:267:39
913.26:257:40
1013.36:257:41
1113.36:247:41
1213.36:237:42
1313.36:237:42
1413.36:227:43
1513.46:217:44
1613.46:217:44
1713.46:207:45
1813.46:207:45
1913.46:197:46
2013.56:197:47
2113.56:187:47
2213.56:187:48
2313.56:177:48
2413.56:177:49
2513.56:167:49
2613.66:167:50
2713.66:167:51
2813.66:157:51
2913.66:157:52
3013.66:157:52
3113.66:157:53

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.43 kWh/m².

For context, solar energy here swings from a low near 3.5 kWh/m² to a high of 7.72 kWh/m² in June across the year — May's 7.43 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.3Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.4Intense
127.4Intense
137.4Intense
147.4Intense
157.4Intense
167.5Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.6Intense
257.6Intense
267.6Intense
277.6Intense
287.6Intense
297.6Intense
307.6Intense
317.7Intense
Planning a trip in May

Hazard calendar for San Isidro

In seasonPeak

None of San Isidro's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

San Isidro sits in the Atlantic hurricane belt; the season peaks August–October.

San Isidro sees seasonal dust haze (July–August), heaviest in July.

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

Is May a good time to visit San Isidro?

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
3.4
Beach & pool
7th-best month of the year

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

What to pack for San Isidro in May

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

In May, San Isidro sees daytime highs around 19°C and nights near 17°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near San Isidro in May

The nearest coast averages about 20°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 24°C and coldest in March near 19°C.

It's comfortable for a long swim from May 9 to Jan 10 — about 8.1 months when the water holds above 20°C.

18°20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan20Cool
Feb19Cool
Mar19Cool
Apr19Cool
May20Refreshing
Jun21Refreshing
Jul22Refreshing
Aug23Refreshing
Sep24Refreshing
Oct24Refreshing
Nov22Refreshing
Dec21Refreshing

UV index in San Isidro in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Isidro peaks around July 17 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 17UV 11Dec 17UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar9Very high
Apr9Very high
May10Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct9Very high
Nov5Moderate
Dec4Moderate

Air quality in San Isidro 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 San Isidro is worst in February — around 19 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 919 µg/m³Jun 126 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar10Good
Apr7Good
May7Good
Jun6Good
Jul9Good
Aug11Good
Sep8Good
Oct9Good
Nov8Good
Dec17Moderate
Location & terrain

Where is San Isidro?

San Isidro sits at 28.1°N, 16.6°W, 207 m above sea level, in Spain. The nearest listed city is Granadilla de Abona, 5.0 km away.

Topography around San Isidro

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

Within 3 km, the terrain around San Isidro has large variations in elevation — a maximum elevation change of 605 m around an average of 214 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,658 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,670 m.

The land around San Isidro is covered by grassland (54%) within 3 km, water (42%) and grassland (25%) within 16 km, and water (83%) within 80 km.

3 km
605 m
16 km
2,658 m
80 km
3,670 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Granadilla de Abona 5.0 km · San Miguel De Abona 6.0 km · Arona 12 km · Adeje 17 km · Guía de Isora 26 km · Güimar 30 km · Realejo Alto 33 km · Los Realejos 34 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 San Isidro (28.0762°, -16.558°, elevation 207 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).