Chiaia weather in December

In December, Chiaia sees average daytime highs of 14°C and overnight lows near 11°C, with 154 mm of rain across 13.4 wet days and about 9.1 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 13°C by the end. The sky is clear or mostly clear about 39% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Chiaia's 10th-clearest and 1st-windiest month. For the whole year in context, see Chiaia's year-round climate.

Daytime high
14°
9th warmest
Overnight low
11°
4th coldest
Rainfall
154 mm
13.4 wet days
Daylight
9 h 06 min
7:27 AM – 4:32 PM
Cloud cover
52%
10th clearest
Wind
18 km/h
1st windiest
Solar energy
1.72 kWh/m²
Travel score
3.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 15°C in the first days to 13°C by the end.

A typical December day in Chiaia reaches about 14°C in the afternoon and slips back to 11°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 16°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11512
21512
31512
41512
51512
61512
71412
81412
91412
101412
111412
121411
131411
141411
151411
161411
171411
181311
191311
201311
211311
221311
231311
241311
251311
261310
271310
281310
291310
301310
311310

Chiaia weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10°12211.59.43.3
Feb12° / 10°10110.610.43.3
Mar14° / 11°959.811.74.1
Apr16° / 13°749.313.15.1
May19° / 17°44614.27.0
Jun23° / 20°223.414.98.5
Jul26° / 23°11214.68.9
Aug26° / 24°182.613.68.6
Sep24° / 21°86812.37.6
Oct21° / 18°12410.210.96.6
Nov17° / 14°18813.59.75.1
Dec14° / 11°15413.49.13.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35347
45347
55446
65446
75347
85347
95347
105347
115347
125347
135347
145248
155347
165347
175248
185347
195347
205347
215446
225446
235446
245545
255545
265644
275644
285644
295743
305743
315743

Chance of precipitation in December

Any precipitation

Chiaia gets around 154 mm of rain over 13.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
246
346
446
545
645
745
845
945
1044
1144
1243
1343
1442
1542
1642
1741
1841
1941
2041
2141
2241
2341
2441
2540
2640
2740
2840
2940
3039
3139

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
18713
28812
38911
49010
5919
6928
7937
8946
9946
10955
11964
12964
13973
14973
15973
16982
17982
18982
19982
20973
21973
22973
23973
24973
25973
26973
27973
28973
29973
30973
31982

Wind in December

Winds average 18 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 18 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:14 AM to 7:33 AM, and sunset from 4:31 PM to 4:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:144:31
29.37:154:31
39.27:164:31
49.27:174:31
59.27:184:31
69.27:194:31
79.27:204:31
89.27:214:31
99.27:224:31
109.17:224:31
119.17:234:31
129.17:244:31
139.17:254:31
149.17:254:31
159.17:264:32
169.17:274:32
179.17:274:32
189.17:284:32
199.17:294:33
209.17:294:33
219.17:304:34
229.17:304:34
239.17:314:35
249.17:314:35
259.17:314:36
269.17:324:36
279.17:324:37
289.17:324:37
299.17:334:38
309.17:334:39
319.17:334:39

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.72 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.72 kWh/m² to a high of 7.07 kWh/m² in July across the year — December's 1.72 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.8Dim
311.8Dim
Planning a trip in December

Hazard calendar for Chiaia

In seasonPeak

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

Chiaia's rainy season runs September–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Chiaia?

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

3.8
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Chiaia.

What to pack for Chiaia in December

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

In December, Chiaia sees daytime highs around 14°C and nights near 11°C. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Chiaia in December

The nearest coast averages about 17°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 13 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Nov 7 — about 5.5 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun23Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Chiaia 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 Chiaia peaks around July 16 at about 9 (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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 16UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Chiaia in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Chiaia is worst in April — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 916 µg/m³Dec 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar16Moderate
Apr16Moderate
May14Moderate
Jun13Moderate
Jul11Good
Aug12Good
Sep12Good
Oct12Good
Nov10Good
Dec10Good
Location & terrain

Where is Chiaia?

Chiaia sits at 40.8°N, 14.2°E, 6 m above sea level, in Italy. The nearest listed city is Vomero, 1.0 km away.

Topography around Chiaia

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

Within 3 km, the terrain around Chiaia has significant variations in elevation — a maximum elevation change of 313 m around an average of 69 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,040 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,032 m.

The land around Chiaia is covered by artificial surfaces (47%) and water (35%) within 3 km, water (42%) and artificial surfaces (28%) within 16 km, and water (46%) and trees (34%) within 80 km.

3 km
313 m
16 km
1,040 m
80 km
2,032 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Vomero 1.0 km · San Ferdinando 2.0 km · Montecalvario 2.0 km · Fuorigrotta 2.0 km · Arenella 3.0 km · Avvocata 3.0 km · Posillipo 3.0 km · Soccavo 3.0 km

Italy travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
230 V · 50 Hz
Prices
≈ 69% of US
price level, 2025
GDP per capita
$43,309
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 513
Religion
Christian 81%unaffiliated 13%Muslim 5%other 1%

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 Chiaia (40.8325°, 14.2268°, elevation 6 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).