Nettuno weather in August

In August, Nettuno sees average daytime highs of 27°C and overnight lows near 22°C, with 22 mm of rain across 3.9 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 82% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Nettuno's 2nd-clearest and 12th-windiest month. For the whole year in context, see Nettuno's year-round climate.

Daytime high
27°
1st warmest
Overnight low
22°
12th coldest
Rainfall
22 mm
3.9 wet days
Daylight
13 h 42 min
5:23 AM – 7:04 PM
Cloud cover
21%
2nd clearest
Wind
9 km/h
12th windiest
Solar energy
6.28 kWh/m²
Travel score
8.1
out of 10

Nettuno is chief town of the homonym municipality.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical August day in Nettuno reaches about 27°C in the afternoon and slips back to 22°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142722
152722
162722
172722
182722
192722
202722
212722
222722
232722
242722
252722
262722
272722
282621
292621
302621
312621

Nettuno weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 8610.79.33.1
Feb12° / 8310.310.33.2
Mar14° / 819.911.74.2
Apr16° / 11°7410.513.15.2
May20° / 15°538.214.36.9
Jun24° / 19°295.114.98.2
Jul27° / 22°193.314.78.4
Aug27° / 22°223.913.78.1
Sep24° / 19°919.212.37.3
Oct20° / 16°13111.110.96.4
Nov16° / 12°16013.89.74.7
Dec13° / 12112.39.13.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 9%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1946
2946
3946
4937
5937
6937
7937
8937
9937
10937
11928
12928
13928
14928
15928
16928
17928
18928
19928
20928
21919
229010
239010
249010
258911
268812
278812
288614
298614
308515
318416

Chance of precipitation in August

Any precipitation

Nettuno gets around 22 mm of rain over 3.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 14% and peaks near 22% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
411
510
610
710
810
910
1010
1111
1211
1311
1411
1512
1612
1712
1813
1913
2014
2114
2215
2315
2416
2517
2618
2718
2819
2920
3021
3122

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
102125630
202125630
302125531
402125432
502125432
602135332
703135232
803135232
903145132
1003145132
1103155131
1203155230
1303155329
1403155329
1503155428
1603155527
1703165526
1803165625
1903165625
2003165625
2103165724
2203175624
2304175623
2404185523
2515195322
2616205221
2716225120
2817234919
2928254818
3029264716
31210274615

Wind in August

Winds average 9 km/h in August, the calmest month.

Across August, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 5:08 AM to 5:39 AM, and sunset from 7:23 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:087:23
214.25:097:22
314.25:107:21
414.15:117:20
514.15:127:18
614.15:137:17
714.05:147:16
814.05:157:15
914.05:167:13
1013.95:177:12
1113.95:187:11
1213.85:197:09
1313.85:207:08
1413.85:217:07
1513.75:227:05
1613.75:237:04
1713.65:247:02
1813.65:257:01
1913.65:266:59
2013.55:276:58
2113.55:286:56
2213.45:296:55
2313.45:306:53
2413.35:316:52
2513.35:326:50
2613.25:346:48
2713.25:356:47
2813.25:366:45
2913.15:376:43
3013.15:386:42
3113.05:396:40

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.28 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 7.14 kWh/m² in July across the year — August's 6.28 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.7Intense
46.7Intense
56.7Intense
66.6Intense
76.6Intense
86.6Intense
96.5Intense
106.5Intense
116.5Intense
126.4Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.0Intense
236.0Bright
245.9Bright
255.9Bright
265.8Bright
275.8Bright
285.7Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in August

Hazard calendar for Nettuno

In seasonPeak

None of Nettuno's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is August a good time to visit Nettuno?

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

8.1
Sightseeing
3rd-best month of the year
8.2
Beach & pool
2nd-best month of the year

August is one of the better times to visit Nettuno for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Nettuno in August

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

In August, Nettuno sees daytime highs around 27°C and nights near 22°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Nettuno in August

The nearest coast averages about 26°C in August — 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.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Nettuno in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 15UV 10Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

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.

3 km
61 m
16 km
95 m
80 km
2,137 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Anzio 4.0 km · Marina di Ardea-Tor San Lorenzo 15 km · Aprilia 15 km · Ardea 19 km · Latina 20 km · Cisterna di Latina 20 km · Torvaianica 25 km · Velletri 27 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 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. 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).