Caldes de Montbui weather in May

In May, Caldes de Montbui sees average daytime highs of 21°C and overnight lows near 10°C, with 81 mm of rain across 11.3 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 23°C by the end. The sky is clear or mostly clear about 30% 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 Caldes de Montbui's 11th-clearest and 3rd-windiest month. For the whole year in context, see Caldes de Montbui's year-round climate.

Daytime high
21°
5th warmest
Overnight low
10°
8th coldest
Rainfall
81 mm
11.3 wet days
Daylight
14 h 18 min
5:37 AM – 7:58 PM
Cloud cover
57%
11th clearest
Wind
7 km/h
3rd windiest
Solar energy
6.09 kWh/m²
Travel score
6.3
out of 10

Caldes de Montbui is capital town of the municipality of Caldes de Montbui, 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 19°C in the first days to 23°C by the end.

A typical May day in Caldes de Montbui reaches about 21°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1198
2199
3199
4199
5199
6209
7209
8209
92010
102010
112010
122010
132110
142110
152110
162110
172111
182111
192111
202211
212211
222211
232211
242212
252212
262212
272312
282312
292312
302312
312312

How May really feels in Caldes de Montbui

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Caldes de Montbui weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 446.20.59.33.0
Feb12° / 406.91.110.33.6
Mar15° / 568.70.311.74.9
Apr17° / 8211.4013.15.4
May21° / 10°8111.3014.36.3
Jun25° / 14°648.90157.1
Jul28° / 17°528014.76.8
Aug28° / 17°669.7013.76.5
Sep24° / 14°9411.7012.36.6
Oct20° / 10°10110.7010.96.2
Nov15° / 657.709.74.6
Dec11° / 4360.493.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54852
64951
74951
84951
95050
105050
115149
125149
135149
145149
155149
165248
175347
185347
195347
205446
215446
225545
235545
245545
255545
265644
275644
285644
295644
305644
315644

Chance of precipitation in May

Any precipitation

Caldes de Montbui gets around 81 mm of rain over 11.3 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 37% and peaks near 41% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
441
541
640
740
840
940
1040
1140
1240
1340
1440
1540
1639
1739
1838
1937
2037
2136
2235
2334
2434
2533
2633
2733
2832
2932
3032
3133

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19640
29640
39550
49550
59460
69370
79370
89280
99190
109190
1190100
1289110
1389110
1488120
1587130
1686140
1785150
1882171
1981181
2079201
2177221
2275241
2373261
2471281
2569301
2666322
2764342
2862362
2960382
3058402
3155423

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:55 AM to 5:26 AM, and sunset from 7:42 PM to 8:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:557:42
213.85:547:43
313.95:537:44
413.95:517:45
513.95:507:46
614.05:497:47
714.05:487:48
814.15:467:49
914.15:457:50
1014.15:447:51
1114.25:437:53
1214.25:427:54
1314.25:417:55
1414.35:397:56
1514.35:387:57
1614.35:377:58
1714.45:367:59
1814.45:358:00
1914.45:358:01
2014.55:348:02
2114.55:338:03
2214.55:328:04
2314.65:318:05
2414.65:308:06
2514.65:308:06
2614.65:298:07
2714.75:288:08
2814.75:288:09
2914.75:278:10
3014.75:268:11
3114.85:268:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.09 kWh/m².

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 6.6 kWh/m² in June across the year — May's 6.09 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Intense
156.0Intense
166.1Intense
176.1Intense
186.1Intense
196.2Intense
206.2Intense
216.2Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.4Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in May

Is May a good time to visit Caldes de Montbui?

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

6.3
Sightseeing
5th-best month of the year
3.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Caldes de Montbui for sightseeing.

What to pack for Caldes de Montbui in May

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

In May, Caldes de Montbui sees daytime highs around 21°C and nights near 10°C. Pack sun protection. Worth having: rain gear. About 11 days see rain.

sun protectionrain gear

Sea temperature near Caldes de Montbui 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 at the nearest coast (about 34 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 11 to Oct 23 — about 4.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep24Refreshing
Oct21Refreshing
Nov17Cool
Dec15Bracing

UV index in Caldes de Montbui 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 Caldes de Montbui 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 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Caldes de Montbui?

Caldes de Montbui sits at 41.6°N, 2.2°E, 232 m above sea level, in Spain. The nearest listed city is Castellar del Vallès, 7.0 km away.

Topography around Caldes de Montbui

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

Within 3 km, the terrain around Caldes de Montbui has significant variations in elevation — a maximum elevation change of 413 m around an average of 273 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,055 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,518 m.

The land around Caldes de Montbui is covered by trees (51%) within 3 km, trees (56%) within 16 km, and trees (50%) and water (25%) within 80 km.

3 km
413 m
16 km
1,055 m
80 km
2,518 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Castellar del Vallès 7.0 km · Parets del Vallès 9.0 km · Canovelles 10 km · Granollers 10 km · Mollet del Vallès 11 km · Sabadell 11 km · Santa Perpètua de Mogoda 11 km · Sant Quirze del Vallès 13 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 Caldes de Montbui (41.6333°, 2.1667°, elevation 232 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).