Forio weather in December

In December, Forio sees average daytime highs of 14°C and overnight lows near 12°C, with 125 mm of rain across 12.4 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 14°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 Forio's 11th-clearest and 1st-windiest month. For the whole year in context, see Forio's year-round climate.

Daytime high
14°
9th warmest
Overnight low
12°
4th coldest
Rainfall
125 mm
12.4 wet days
Daylight
9 h 06 min
7:28 AM – 4:34 PM
Cloud cover
52%
11th clearest
Wind
20 km/h
1st windiest
Solar energy
1.76 kWh/m²
Travel score
4.1
out of 10

Forio is chief town of the homonym municipality.

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

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 14°C by the end.

A typical December day in Forio reaches about 14°C in the afternoon and slips back to 12°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 17°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11614
21614
31514
41513
51513
61513
71513
81513
91513
101513
111513
121513
131513
141413
151413
161412
171412
181412
191412
201412
211412
221412
231412
241412
251412
261412
271412
281412
291412
301412
311312

Forio 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
Jan13° / 11°9610.99.43.6
Feb13° / 11°829.910.43.5
Mar14° / 12°73911.74.2
Apr16° / 14°567.813.15.3
May19° / 17°325.114.27.2
Jun23° / 21°152.514.98.6
Jul25° / 24°91.414.69.1
Aug26° / 25°162.113.68.7
Sep24° / 22°737.712.37.7
Oct21° / 19°1049.910.96.7
Nov17° / 15°15613.49.75.3
Dec14° / 12°12512.49.14.1

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 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35743
45743
55644
65644
75743
85743
95743
105644
115545
125545
135545
145446
155446
165446
175347
185347
195347
205347
215347
225347
235347
245347
255347
265347
275446
285446
295446
305446
315446

Chance of precipitation in December

Any precipitation

Forio gets around 125 mm of rain over 12.4 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 40% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
242
342
442
542
642
742
842
942
1041
1141
1241
1341
1441
1540
1640
1740
1840
1940
2039
2139
2239
2339
2439
2538
2638
2738
2838
2938
3037
3137

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
184151
285141
386131
487121
588111
689101
79091
89091
99280
109370
119370
129460
139460
149460
159550
169550
179550
189550
199550
209550
219550
229550
239550
249550
259550
269550
279550
289550
299640
309640
319640

Wind in December

Winds average 20 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2421breezy
2521breezy
2621breezy
2721breezy
2820breezy
2920breezy
3020breezy
3120breezy

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 7:15 AM to 7:34 AM, and sunset from 4:33 PM to 4:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:154:33
29.37:164:33
39.37:174:33
49.27:184:33
59.27:194:33
69.27:204:32
79.27:214:32
89.27:224:32
99.27:234:32
109.17:244:32
119.17:244:33
129.17:254:33
139.17:264:33
149.17:274:33
159.17:274:33
169.17:284:34
179.17:294:34
189.17:294:34
199.17:304:35
209.17:304:35
219.17:314:35
229.17:314:36
239.17:324:36
249.17:324:37
259.17:334:37
269.17:334:38
279.17:334:39
289.17:334:39
299.17:344:40
309.17:344:41
319.17:344:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.76 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7.23 kWh/m² in June across the year — December's 1.76 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.8Dim
281.8Dim
291.8Dim
301.8Dim
311.8Dim
Planning a trip in December

Hazard calendar for Forio

In seasonPeak

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

Forio'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 Forio?

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

4.1
Sightseeing
10th-best month of the year
0.1
Beach & pool
9th-best month of the year

December is a reasonable time to visit Forio for sightseeing.

What to pack for Forio in December

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

In December, Forio sees daytime highs around 14°C and nights near 12°C. Worth packing: a warm layer, rain gear and a windbreaker. About 12 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Forio 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 27 to Nov 5 — about 5.4 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 Forio 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 Forio 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
Location & terrain

Where is Forio?

Forio sits at 40.7°N, 13.9°E, 18 m above sea level, in Italy. The nearest listed city is Ischia, 7.0 km away.

Topography around Forio

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

Within 3 km, the terrain around Forio has large variations in elevation — a maximum elevation change of 761 m around an average of 78 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 761 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,574 m.

The land around Forio is covered by water (56%) and trees (30%) within 3 km, water (94%) within 16 km, and water (63%) and trees (22%) within 80 km.

3 km
761 m
16 km
761 m
80 km
1,574 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Ischia 7.0 km · Ischia Porto 8.0 km · Bacoli 19 km · Pozzuoli 23 km · Monterusciello 24 km · Bagnoli 27 km · Quarto 29 km · Pianura 30 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 Forio (40.7376°, 13.86°, elevation 18 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).