Nettuno in Spring
In spring (March, April and May), Nettuno sees average daytime highs around 17°C and overnight lows near 12°C, with 207 mm of rain over about 29 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 13°C in early March to 22°C by late May. The sky is clear or mostly clear about 46% of the time across spring, and the air most often feels dry.
Spring is Nettuno's 3rd-best season to visit on our travel score. For the whole year in context, see Nettuno's year-round climate.
- Avg daytime high
- 17°C
- 3rd-warmest season
- Avg overnight low
- 12°C
- Rainfall
- 207 mm
- 29 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.4
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Nettuno in Spring
Over the season highs climb from about 13°C in early March to 22°C by late May.
A typical spring day in Nettuno reaches about 17°C and drops to 12°C overnight. The warmest of the three months is May, the coolest March.
Nettuno weather by month
How the three spring months (March, April and May) 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° / 7° | 86 | 10.7 | 9.3 | 3.1 |
| Feb | 12° / 7° | 83 | 10.3 | 10.3 | 3.2 |
| Mar | 14° / 9° | 81 | 9.9 | 11.7 | 4.2 |
| Apr | 16° / 11° | 74 | 10.5 | 13.1 | 5.2 |
| May | 20° / 15° | 53 | 8.2 | 14.3 | 6.9 |
| Jun | 24° / 19° | 29 | 5.1 | 14.9 | 8.2 |
| Jul | 27° / 22° | 19 | 3.3 | 14.7 | 8.4 |
| Aug | 27° / 22° | 22 | 3.9 | 13.7 | 8.1 |
| Sep | 24° / 19° | 91 | 9.2 | 12.3 | 7.3 |
| Oct | 20° / 16° | 131 | 11.1 | 10.9 | 6.4 |
| Nov | 16° / 12° | 160 | 13.8 | 9.7 | 4.7 |
| Dec | 13° / 9° | 121 | 12.3 | 9.1 | 3.5 |
Cloud cover in Spring
The sky is clear or mostly clear about 46% of the time across spring.
Chance of precipitation in Spring
Nettuno gets around 207 mm of rain over 29 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 11 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 hours in early March to 14 h 42 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.4 kWh/m².
Hazard calendar for Nettuno
In spring, Nettuno overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Nettuno's rainy season runs September–April, when most of the year's rain falls.
Is spring a good time to visit Nettuno?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Nettuno for sightseeing.
What to pack for Nettuno in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Nettuno sees daytime highs around 17°C and nights near 12°C. Pack sun protection. Worth having: a warm layer and rain gear. About 29 days see rain.
Sea temperature near Nettuno in Spring
The nearest coast averages about 16°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from May 30 to Nov 2 — about 5.2 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 | 18 | 22 | 25 | 26 | 24 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 16 | Cool |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Nettuno in Spring
Clear-sky midday UV across spring averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nettuno peaks around July 15 at about 10 (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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 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 | 1 | 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 Nettuno?
Nettuno sits at 41.5°N, 12.7°E, 11 m above sea level, in Italy. The nearest listed city is Anzio, 4.0 km away.
Topography around Nettuno
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nettuno.
Within 3 km, the terrain around Nettuno has only modest variations in elevation — a maximum elevation change of 61 m around an average of 16 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 95 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,137 m.
The land around Nettuno is covered by water (38%) and artificial surfaces (24%) within 3 km, water (53%) within 16 km, and water (45%) and trees (32%) 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 Nettuno (41.4579°, 12.6639°, elevation 11 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.