Formia in Winter
In winter (December, January and February), Formia sees average daytime highs around 12°C and overnight lows near 8°C, with 346 mm of rain over about 32 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Across winter, daytime highs hold fairly steady around 12°C. The sky is clear or mostly clear about 40% of the time across winter, and the air most often feels dry.
Winter is Formia's weakest season of the year to visit on our travel score. For the whole year in context, see Formia's year-round climate.
- Avg daytime high
- 12°C
- coldest season of the year
- Avg overnight low
- 8°C
- Rainfall
- 346 mm
- 32 wet days
- Avg wind
- 11 km/h
- Travel score
- 3.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Formia in Winter
Across winter, daytime highs hold fairly steady around 12°C.
A typical winter day in Formia reaches about 12°C and drops to 8°C overnight. The warmest of the three months is December, the coolest February.
Formia weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 8° | 102 | 10.2 | 9.4 | 3.1 |
| Feb | 12° / 7° | 99 | 9.8 | 10.3 | 3.2 |
| Mar | 14° / 9° | 93 | 9.5 | 11.7 | 4.1 |
| Apr | 16° / 11° | 82 | 10.4 | 13.1 | 5.1 |
| May | 20° / 15° | 53 | 7.2 | 14.3 | 7.0 |
| Jun | 24° / 19° | 26 | 4.2 | 14.9 | 8.3 |
| Jul | 26° / 22° | 14 | 2.8 | 14.7 | 8.5 |
| Aug | 27° / 22° | 19 | 2.6 | 13.7 | 8.3 |
| Sep | 24° / 19° | 96 | 8.3 | 12.3 | 7.5 |
| Oct | 20° / 16° | 146 | 10.4 | 10.9 | 6.5 |
| Nov | 16° / 12° | 202 | 13.8 | 9.7 | 4.7 |
| Dec | 13° / 9° | 146 | 12.2 | 9.1 | 3.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 40% of the time across winter.
Chance of precipitation in Winter
Formia gets around 346 mm of rain over 32 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 12 min in early December to 10 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.2 kWh/m².
Hazard calendar for Formia
In winter, Formia overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Formia's rainy season runs September–March, when most of the year's rain falls.
Is winter a good time to visit Formia?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Formia.
What to pack for Formia in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Formia sees daytime highs around 12°C and nights near 8°C. Pack a warm layer. Worth having: rain gear. About 32 days see rain.
Sea temperature near Formia in Winter
The nearest coast averages about 15°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 15 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 28 to Nov 5 — about 5.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 14 | 16 | 19 | 22 | 25 | 26 | 24 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 16 | Cool |
| May | 19 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Formia in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Formia peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 4 | 7 | 9 | 10 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 4 | Moderate |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Where is Formia?
Formia sits at 41.3°N, 13.6°E, 19 m above sea level, in Italy. The nearest listed city is Gaeta, 6.0 km away.
Topography around Formia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Formia.
Within 3 km, the terrain around Formia has large variations in elevation — a maximum elevation change of 826 m around an average of 111 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,526 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,266 m.
The land around Formia is covered by water (45%) within 3 km, water (42%) and trees (32%) within 16 km, and water (41%) and trees (36%) within 80 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
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 Formia (41.2563°, 13.6089°, elevation 19 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.