Climate and average weather in Gaeta

In Gaeta, the summers are humid, warm, dry, and clear and the winters are cool and partly cloudy.

Best: mid May to early October

Over the course of the year, the temperature in Gaeta typically varies from 7°C to 27°C, and is rarely below 4°C or above 30°C. August is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Gaeta for warm-weather activities is from mid May to early October.

Hottest
Aug
27°
Coldest
Jan
Wettest
Nov
202 mm
Driest
Jul
14 mm
Rain / yr
1075 mm
101 wet days
Daylight
9.0–15.0 h
shortest–longest
Elevation
2 m
41.2°N
Clearest
Jul
19% cloud

Gaeta is chief town of the homonym municipality.

Air quality
Good
PM10 23.8 µg/m³ · 2019

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

Gaeta weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid May to early October.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Gaeta, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.3 months, from June 13 to September 19, with daily high temperatures above 23°C. The hottest month of the year in Gaeta is August, with an average high of 27°C and low of 22°C.

The cool season lasts 4.1 months, from November 27 to March 31, with daily high temperatures below 15°C. The coldest month of the year in Gaeta is January, with an average low of 8°C and high of 12°C.

Days typically run about 5°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan128
Feb127
Mar149
Apr1611
May2015
Jun2419
Jul2622
Aug2722
Sep2419
Oct2016
Nov1612
Dec139

Average hourly temperature in Gaeta

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 27°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Gaeta weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10210.29.43.1
Feb12° / 999.810.33.2
Mar14° / 939.511.74.1
Apr16° / 11°8210.413.15.1
May20° / 15°537.214.37.0
Jun24° / 19°264.214.98.3
Jul26° / 22°142.814.78.5
Aug27° / 22°192.613.68.3
Sep24° / 19°968.312.37.5
Oct20° / 16°14610.410.96.5
Nov16° / 12°20213.89.74.7
Dec13° / 14612.29.13.5

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Gaeta gets about 1075 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 6.0 months, from around Sep 13 to Mar 14, peaking in November at about 46% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 6.

November is the wettest month by volume, with 202 mm over about 14 wet days; July is the driest, with 14 mm.

0%10%20%30%40%50%60%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetNov 15 · 46%Aug 6 · 7%
Rain on a day (%)Rain days
Jan3310
Feb3510
Mar3010
Apr3410
May237
Jun134
Jul93
Aug103
Sep278
Oct3410
Nov4514
Dec3912

Monthly rainfall

Over a full year, Gaeta collects about 1075 mm of rain across 101 wet days — roughly 90 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 202 mm, while July is the driest at just 14 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec1029993825326141996146202146
Rainfall (mm)Rain days
Jan10210
Feb9910
Mar9310
Apr8210
May537
Jun264
Jul143
Aug193
Sep968
Oct14610
Nov20214
Dec14612

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Gaeta, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around May 11 and lasts for 4.7 months, ending around September 30. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 93% of the time on average.

The cloudier part of the year begins around October 1 and lasts for 7.3 months, ending around May 10. The cloudiest month is November, when it is overcast or mostly cloudy 48% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecAug 4 · 94%Nov 24 · 50%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan5545
Feb5842
Mar5842
Apr6139
May6931
Jun8317
Jul937
Aug919
Sep7426
Oct6139
Nov5248
Dec5446

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 16, brings about 15 hours of light; the shortest, around December 15, only 9 hours — a swing of roughly 6 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.47:354:55
Feb10.37:105:31
Mar11.76:266:05
Apr13.15:336:39
May14.34:537:11
Jun14.94:377:35
Jul14.74:507:32
Aug13.65:207:00
Sep12.35:526:08
Oct10.96:245:17
Nov9.77:024:40
Dec9.17:314:33

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Gaeta averages about 16 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 11 and 26 days.

The sunnier stretch runs 4.3 months, from around May 17 to Sep 24. The sunniest month is July, with roughly 26 sunny days (brilliant).

The greyest month is November, down near 11 sunny days — about 58% fewer than the July peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2126 daysNov 2311 days
Sunny daysSky
Jan12Mixed
Feb12Mixed
Mar12Mixed
Apr12Mixed
May16Bright
Jun20Bright
Jul26Brilliant
Aug25Brilliant
Sep17Bright
Oct14Mixed
Nov11Mixed
Dec12Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Gaeta, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.7 months, from around May 21 to October 10. The muggiest month is August, when the air feels humid, muggy or worse about 95% of the time.

The most comfortable stretch runs from around October 11 to May 20, and January is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 6 · 100%Aug 1 · 2%oppressivecomfortablehumiddrymuggycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan1000000
Feb1000000
Mar1000000
Apr8514000
May31432330
Jun51839326
Jul15225022
Aug14175127
Sep102334303
Oct32392530
Nov7719400
Dec982000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Gaeta is typically calm, near 10 km/h, and varies little with the seasons.

The windier part of the year lasts 6.0 months, from around Oct 23 to Apr 22. The windiest month is November, averaging about 12 km/h (calm).

The calmer part of the year runs from around Apr 23 to Oct 22, with August the calmest month at about 9 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeNov 23 · 12 km/hAug 11 · 9 km/h
Wind speed (km/h)Feels
Jan11calm
Feb11calm
Mar11calm
Apr11calm
May10calm
Jun9calm
Jul9calm
Aug9calm
Sep9calm
Oct10calm
Nov12calm
Dec12calm

Hazard calendar for Gaeta

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Gaeta'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

Best time to visit Gaeta

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Gaeta throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late September, Gaeta is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Gaeta for general outdoor tourist activities is from mid May to early October, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 28 · 8.7

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan3.1poor
Feb3.2poor
Mar4.1fair
Apr5.1fair
May6.9good
Jun8.3ideal
Jul8.5ideal
Aug8.3ideal
Sep7.5good
Oct6.5good
Nov4.8fair
Dec3.5fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Gaeta for hot-weather activities is from mid June to early September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 7 · 8.6

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Gaeta, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around August (highs near 27°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 12°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Gaeta sees daytime highs around 27°C and nights near 22°C. Pack sun protection. Worth having: light clothes.

Sea temperature near Gaeta

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

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 28 to Nov 5 — about 5.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index (midday) in Gaeta by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Gaeta 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 16UV 10Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Average hourly UV index in Gaeta

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar50
Apr40
May7.53
Jun85
Jul8.56
Aug7.54.5
Sep60
Oct30
Nov00
Dec00
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Gaeta is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Gaeta banks about 2,328 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.

01,0002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar37
Apr109
May229
Jun338
Jul431
Aug447
Sep342
Oct247
Nov124
Dec26

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Gaeta receives about 4.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.7 and 7.2 kWh/m².

The brighter stretch of the year lasts 6.0 months, from around Mar 20 to Sep 19. The brightest month is June, averaging about 7.1 kWh/m² (intense).

The dimmest month is December, down near 1.7 kWh/m² — roughly 75% less than the June peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJun 297.2 kWhDec 191.7 kWh
Solar energy (kWh/m²)Level
Jan2.0Moderate
Feb2.9Moderate
Mar4.2Bright
Apr5.5Bright
May6.4Intense
Jun7.1Intense
Jul7.1Intense
Aug6.3Intense
Sep4.7Bright
Oct3.3Moderate
Nov2.1Moderate
Dec1.7Dim

Where is Gaeta?

Gaeta sits at 41.2°N, 13.6°E, 2 m above sea level, in Italy. The nearest listed city is Formia, 6.0 km away.

Topography around Gaeta

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

Within 3 km, the terrain around Gaeta has only modest variations in elevation — a maximum elevation change of 172 m around an average of 18 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,525 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,266 m.

The land around Gaeta is covered by water (67%) within 3 km, water (63%) within 16 km, and water (45%) and trees (34%) within 80 km.

3 km
172 m
16 km
1,525 m
80 km
2,266 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Formia 6.0 km · Minturno 16 km · Fondi 20 km · Terracina 29 km · Mondragone 29 km · Cassino 37 km · Castel Volturno 37 km · Sabaudia 46 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 Gaeta (41.2141°, 13.5708°, elevation 2 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).