Isernia weather in March

In March, Isernia sees average daytime highs of 12°C and overnight lows near 3°C, with 106 mm of precipitation across 12.9 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 10°C in the first days to 13°C by the end. The sky is clear or mostly clear about 27% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Isernia's 10th-clearest and 1st-windiest month. For the whole year in context, see Isernia's year-round climate.

Daytime high
12°
9th warmest
Overnight low
4th coldest
Precipitation
106 mm
12.9 wet days
Daylight
11 h 42 min
6:23 AM – 6:02 PM
Cloud cover
61%
10th clearest
Wind
6 km/h
1st windiest
Solar energy
4.05 kWh/m²
Travel score
2.9
out of 10
Air quality
Excellent
PM10 11.9 µg/m³ · 2018

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 10°C in the first days to 13°C by the end.

A typical March day in Isernia reaches about 12°C in the afternoon and slips back to 3°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 16°C. Set against its neighbours, March runs about 3°C warmer than February and about 3°C cooler than April.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1102
2102
3102
4102
5112
6112
7112
8112
9112
10112
11112
12113
13113
14123
15123
16123
17123
18123
19123
20123
21123
22123
23134
24134
25134
26134
27134
28134
29134
30134
31134

How March really feels in Isernia

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 4 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
4
wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Isernia weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8810.62.49.31.3
Feb / 9211.12.810.31.6
Mar12° / 10612.92.211.72.9
Apr15° / 10814.20.313.14.1
May19° / 10°8912.9014.35.8
Jun24° / 14°6210.20157.1
Jul26° / 16°438.3014.77.4
Aug27° / 16°368.3013.77.3
Sep22° / 13°7910.4012.36.8
Oct18° / 11110.40.110.95.8
Nov13° / 15012.50.89.73.4
Dec / 12112.42.491.7

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 17% of March, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24159
34159
44159
54258
64258
74456
84456
94456
104456
114555
124555
134555
144555
154654
164753
174654
184555
194555
204456
214555
224456
234357
244456
254357
264357
274456
284456
294456
304357
314456

Chance of precipitation in March

Any precipitationSnow

Isernia gets around 106 mm of rain and snow over 12.9 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 41% and peaks near 45% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14511
24510
34510
44510
54510
64410
7439
8439
9428
10418
11408
12397
13387
14376
15376
16366
17366
18366
19376
20376
21385
22385
23395
24405
25405
26415
27425
28435
29434
30444
31453

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 6 km/h in March, the windiest month of the year.

Across March, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 hours at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over March. Sunrise moves from 6:48 AM to 5:57 AM, and sunset from 5:45 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:485:45
211.06:465:46
311.06:455:47
411.16:435:48
511.16:415:50
611.26:405:51
711.26:385:52
811.36:375:53
911.36:355:54
1011.46:335:55
1111.46:325:57
1211.56:305:58
1311.56:285:59
1411.66:276:00
1511.66:256:01
1611.76:236:02
1711.76:216:03
1811.76:206:05
1911.86:186:06
2011.86:166:07
2111.96:146:08
2211.96:136:09
2312.06:116:10
2412.06:096:11
2512.16:076:12
2612.16:066:14
2712.26:046:15
2812.26:026:16
2912.36:006:17
3012.35:596:18
3112.45:576:19

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.05 kWh/m².

For context, solar energy here swings from a low near 1.66 kWh/m² to a high of 6.8 kWh/m² in July across the year — March's 4.05 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.6Moderate
73.6Moderate
83.7Moderate
93.7Moderate
103.8Moderate
113.8Moderate
123.9Moderate
134.0Moderate
144.0Bright
154.0Bright
164.1Bright
174.1Bright
184.2Bright
194.2Bright
204.3Bright
214.3Bright
224.3Bright
234.4Bright
244.4Bright
254.5Bright
264.5Bright
274.6Bright
284.6Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in March

Is March a good time to visit Isernia?

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

2.9
Sightseeing
9th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Isernia.

What to pack for Isernia in March

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

In March, Isernia sees daytime highs around 12°C and nights near 3°C. Pack a warm layer. Worth having: rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Isernia in March

The nearest coast averages about 14°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 60 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
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Isernia in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks 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 Isernia peaks around July 15 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 10Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr5Moderate
May7Very high
Jun9Very high
Jul10Extreme
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Isernia in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Isernia is worst in April — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1021 µg/m³Sep 1714 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb20Moderate
Mar21Moderate
Apr22Moderate
May18Moderate
Jun16Moderate
Jul16Moderate
Aug16Moderate
Sep14Moderate
Oct16Moderate
Nov16Moderate
Dec17Moderate
Location & terrain

Where is Isernia?

Isernia sits at 41.6°N, 14.2°E, 423 m above sea level, in Italy. The nearest listed city is Cassino, 36 km away.

Topography around Isernia

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

Within 3 km, the terrain around Isernia has significant variations in elevation — a maximum elevation change of 398 m around an average of 468 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,340 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,771 m.

The land around Isernia is covered by trees (63%) within 3 km, trees (72%) and grassland (22%) within 16 km, and trees (51%) and cropland (21%) within 80 km.

3 km
398 m
16 km
1,340 m
80 km
2,771 m
treesshrubsgrasslandcroplandartificial surfaceswater
March weather nearby: Cassino 36 km · Campobasso 36 km · Sora 53 km · Capua 55 km · Minturno 55 km · Sulmona 57 km · Santa Maria Capua Vetere 57 km · Caserta 59 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 Isernia (41.596°, 14.234°, elevation 423 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).