Siderno weather in May

In May, Siderno sees average daytime highs of 20°C and overnight lows near 14°C, with 33 mm of rain across 6.2 wet days and about 14 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 22°C by the end. The sky is clear or mostly clear about 55% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Siderno's 5th-clearest and 7th-windiest month. For the whole year in context, see Siderno's year-round climate.

Daytime high
20°
6th warmest
Overnight low
14°
7th coldest
Rainfall
33 mm
6.2 wet days
Daylight
14 h 06 min
4:49 AM – 6:53 PM
Cloud cover
39%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
6.77 kWh/m²
Travel score
7.2
out of 10

Siderno is chief town of the homonym municipality.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 22°C by the end.

A typical May day in Siderno reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11812
21813
31813
41813
51913
61913
71913
81913
91913
101914
111914
121914
132014
142014
152014
162014
172014
182014
192015
202015
212115
222115
232115
242115
252115
262115
272116
282116
292216
302216
312216

Siderno weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10012.49.63.1
Feb12° / 8912.210.53.0
Mar14° / 8811.311.74.0
Apr16° / 11°639.9135.2
May20° / 14°336.2147.2
Jun24° / 18°183.514.68.6
Jul27° / 21°112.214.48.7
Aug27° / 21°193.213.58.3
Sep24° / 19°738.912.37.5
Oct21° / 16°10510.7116.5
Nov17° / 12°10911.99.95.2
Dec13° / 11113.49.43.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26832
36931
47030
57129
67228
77327
87426
97426
107426
117426
127426
137426
147426
157426
167426
177426
187426
197426
207426
217426
227525
237525
247525
257624
267624
277723
287723
297723
307822
317822

Chance of precipitation in May

Any precipitation

Siderno gets around 33 mm of rain over 6.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
324
424
523
622
722
821
921
1021
1121
1220
1320
1420
1520
1620
1720
1821
1921
2021
2120
2220
2320
2419
2519
2619
2718
2818
2917
3017
3116

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
187130
285150
384160
482180
581190
679210
777230
875250
973270
1072280
1169301
1267321
1365341
1463352
1561372
1658393
1757403
1854424
1952435
2050456
2148467
2245478
2343489
24424910
25404911
26385012
27365113
28345115
29325216
30305218
31285319

Wind in May

Winds average 9 km/h in May.

Across May, 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:05 AM to 4:39 AM, and sunset from 6:39 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:056:39
213.65:046:40
313.65:036:41
413.75:016:42
513.75:006:43
613.74:596:44
713.84:586:45
813.84:576:46
913.84:566:47
1013.94:556:48
1113.94:546:49
1213.94:536:49
1314.04:526:50
1414.04:516:51
1514.04:506:52
1614.14:496:53
1714.14:486:54
1814.14:476:55
1914.24:476:56
2014.24:466:57
2114.24:456:57
2214.24:446:58
2314.34:446:59
2414.34:437:00
2514.34:427:01
2614.34:427:02
2714.44:417:02
2814.44:407:03
2914.44:407:04
3014.44:397:05
3114.44:397:05

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.77 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 7.42 kWh/m² in June across the year — May's 6.77 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.4Intense
36.4Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.6Intense
96.6Intense
106.6Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.1Intense
317.1Intense
Planning a trip in May

Hazard calendar for Siderno

In seasonPeak

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

Siderno'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 May a good time to visit Siderno?

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

7.2
Sightseeing
5th-best month of the year
3.7
Beach & pool
6th-best month of the year

May is one of the better times to visit Siderno for general sightseeing.

What to pack for Siderno in May

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

In May, Siderno sees daytime highs around 20°C and nights near 14°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Siderno in May

The nearest coast averages about 19°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from May 28 to Nov 13 — about 5.6 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb15Bracing
Mar15Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Siderno in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siderno peaks around July 17 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighHighVery highHighModerateLowJul 17UV 10Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr5Moderate
May7High
Jun9Very high
Jul10Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Siderno?

Siderno sits at 38.3°N, 16.3°E, 10 m above sea level, in Italy. The nearest listed city is Gioia Tauro, 39 km away.

CatanzaroLamezia TermeSambiase

Topography around Siderno

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

Within 3 km, the terrain around Siderno has only modest variations in elevation — a maximum elevation change of 172 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,174 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,931 m.

The land around Siderno is covered by water (43%) and trees (22%) within 3 km, water (44%) and trees (34%) within 16 km, and water (60%) and trees (31%) within 80 km.

3 km
172 m
16 km
1,174 m
80 km
1,931 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Gioia Tauro 39 km · Palmi 40 km · Vibo Valentia 48 km · Reggio Calabria 58 km · Messina 65 km · Catanzaro 73 km · Lamezia Terme 77 km · Sambiase 77 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 Siderno (38.2699°, 16.2961°, elevation 10 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).