Caldes de Montbui weather in December

In December, Caldes de Montbui sees average daytime highs of 11°C and overnight lows near 2°C, with 43 mm of precipitation across 6 wet days and about 9 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 11°C through the month. The sky is clear or mostly clear about 42% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 12 min at the start of December to 9 hours by month's end. Set against the rest of the year, December is Caldes de Montbui's 6th-clearest and 6th-windiest month. For the whole year in context, see Caldes de Montbui's year-round climate.

Daytime high
11°
11th warmest
Overnight low
3rd coldest
Precipitation
43 mm
6 wet days
Daylight
9 hours
8:18 AM – 5:17 PM
Cloud cover
50%
6th clearest
Wind
6 km/h
6th windiest
Solar energy
1.81 kWh/m²
Travel score
3.2
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 December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 11°C through the month.

A typical December day in Caldes de Montbui reaches about 11°C in the afternoon and slips back to 2°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 15°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1123
2123
3123
4123
5123
6123
7122
8122
9122
10122
11112
12112
13112
14112
15112
16112
17112
18112
19112
20112
21112
22112
23111
24111
25111
26111
27111
28111
29111
30111
31111

How December really feels in Caldes de Montbui

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 17 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
17
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Caldes de Montbui weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 11th-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65644
75644
85644
95644
105545
115644
125644
135545
145545
155545
165545
175545
185545
195545
205545
215545
225545
235545
245644
255644
265743
275842
285842
295842
305941
316040

Chance of precipitation in December

Any precipitationSnow

Caldes de Montbui gets around 43 mm of rain and snow over 6 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 19% and peaks near 23% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1230
2220
3220
4220
5210
6211
7211
8211
9211
10202
11202
12202
13202
14202
15202
16202
17202
18202
19192
20192
21192
22182
23181
24171
25171
26161
27161
28161
29151
30151
31151

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 6 km/h in December.

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

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 12 min at the start of December to 9 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 8:05 AM to 8:24 AM, and sunset from 5:17 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.28:055:17
29.28:065:17
39.28:075:17
49.18:085:17
59.18:095:16
69.18:105:16
79.18:115:16
89.18:125:16
99.18:125:16
109.18:135:16
119.08:145:16
129.08:155:17
139.08:165:17
149.08:165:17
159.08:175:17
169.08:185:17
179.08:185:18
189.08:195:18
199.08:195:18
209.08:205:19
219.08:205:19
229.08:215:20
239.08:215:20
249.08:225:21
259.08:225:21
269.08:235:22
279.08:235:22
289.08:235:23
299.08:235:24
309.08:245:24
319.08:245:25

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.81 kWh/m² — the year's lowest.

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 — December's 1.81 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.9Dim
61.9Dim
71.9Dim
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.8Dim
181.8Dim
191.8Dim
201.8Dim
211.8Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.8Dim
281.9Dim
291.9Dim
301.9Dim
311.9Dim
Planning a trip in December

Is December a good time to visit Caldes de Montbui?

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

3.2
Sightseeing
11th-best month of the year
0.0
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Caldes de Montbui.

What to pack for Caldes de Montbui in December

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

In December, Caldes de Montbui sees daytime highs around 11°C and nights near 2°C. Pack a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Caldes de Montbui in December

The nearest coast averages about 15°C in December — 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 December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. 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
December 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).