Sondrio weather in May

In May, Sondrio sees average daytime highs of 12°C and overnight lows near 3°C, with 141 mm of precipitation across 17.9 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 10°C in the first days to 14°C by the end. The sky is clear or mostly clear about 19% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of May to 15 h 18 min by month's end. Set against the rest of the year, May is Sondrio's 12th-clearest and 6th-windiest month. For the whole year in context, see Sondrio's year-round climate.

Daytime high: 12°; 5th warmest
Overnight low: 3°; 8th coldest
Precipitation: 141 mm; 17.9 wet days
Daylight: 14 h 48 min; 4:54 AM – 7:39 PM
Cloud cover: 67%; 12th clearest
Wind: 4 km/h; 6th windiest
Solar energy: 5.42 kWh/m²
Travel score: 2.5; out of 10

Air quality: Elevated; PM2.5 16.5 µg/m³ · 2019

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

← April Sondrio year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 10°C in the first days to 14°C by the end.

A typical May day in Sondrio 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 17°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	9	10	10	10	10	10	10	11	11	11	11	11	11	12	12	12	12	12	12	13	13	13	13	13	13	14	14	14	14	14	14
Avg low (°C)	1	1	1	2	2	2	2	2	2	2	3	3	3	3	3	3	3	4	4	4	4	4	4	4	5	5	5	5	5	5	5

	Avg high (°C)	Avg low (°C)
1	9	1
2	10	1
3	10	1
4	10	2
5	10	2
6	10	2
7	10	2
8	11	2
9	11	2
10	11	2
11	11	3
12	11	3
13	11	3
14	12	3
15	12	3
16	12	3
17	12	3
18	12	4
19	12	4
20	13	4
21	13	4
22	13	4
23	13	4
24	13	4
25	13	5
26	14	5
27	14	5
28	14	5
29	14	5
30	14	5
31	14	5

How May really feels in Sondrio

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

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sondrio weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-3° / -12°	61	7.9	8.5	8.8	0.0
Feb	-1° / -10°	51	7.8	8.7	10	0.0
Mar	4° / -5°	72	9.5	8.6	11.6	0.0
Apr	7° / -1°	113	13.8	8	13.3	0.8
May	12° / 3°	141	17.9	2.7	14.7	2.5
Jun	16° / 7°	149	18.6	0.5	15.5	4.0
Jul	18° / 9°	142	18.5	0.2	15.2	4.9
Aug	18° / 8°	143	17.8	0.1	14	4.8
Sep	14° / 5°	124	12.7	0.9	12.3	3.7
Oct	9° / 1°	140	11.9	3.9	10.7	1.8
Nov	3° / -4°	142	11.4	8.8	9.2	0.1
Dec	-1° / -10°	78	9.3	9.5	8.5	0.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 66%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	31	30	30	30	30	30	31	31	31	32	32	32	33	33	33	34	35	36	36	37	37	37	39	39	39	38	38	39	39	39	39
Cloudier (%)	69	70	70	70	70	70	69	69	69	68	68	68	67	67	67	66	65	64	64	63	63	63	61	61	61	62	62	61	61	61	61

	Clearer (%)	Cloudier (%)
1	31	69
2	30	70
3	30	70
4	30	70
5	30	70
6	30	70
7	31	69
8	31	69
9	31	69
10	32	68
11	32	68
12	32	68
13	33	67
14	33	67
15	33	67
16	34	66
17	35	65
18	36	64
19	36	64
20	37	63
21	37	63
22	37	63
23	39	61
24	39	61
25	39	61
26	38	62
27	38	62
28	39	61
29	39	61
30	39	61
31	39	61

Chance of precipitation in May

Any precipitationSnow

Sondrio gets around 141 mm of rain and snow over 17.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 59% and peaks near 63% on the wettest days, and about 3 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	56	56	57	57	57	58	58	58	58	58	59	59	59	59	59	59	59	59	58	58	58	58	58	58	58	59	60	60	61	62	63
Snow chance (%)	17	17	16	15	15	14	13	13	12	11	11	10	9	9	8	8	7	7	6	6	6	5	5	5	4	4	4	4	3	3	3

	Rain chance (%)	Snow chance (%)
1	56	17
2	56	17
3	57	16
4	57	15
5	57	15
6	58	14
7	58	13
8	58	13
9	58	12
10	58	11
11	59	11
12	59	10
13	59	9
14	59	9
15	59	8
16	59	8
17	59	7
18	59	7
19	58	6
20	58	6
21	58	6
22	58	5
23	58	5
24	58	5
25	58	4
26	59	4
27	60	4
28	60	4
29	61	3
30	62	3
31	63	3

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 06 min at the start of May to 15 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over May. Sunrise moves from 5:15 AM to 4:40 AM, and sunset from 7:20 PM to 7:56 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	14.1	14.1	14.2	14.2	14.3	14.3	14.4	14.4	14.5	14.5	14.5	14.6	14.6	14.7	14.7	14.8	14.8	14.8	14.9	14.9	14.9	15.0	15.0	15.1	15.1	15.1	15.1	15.2	15.2	15.2	15.3
Sunrise (AM)	5:15	5:14	5:12	5:10	5:09	5:07	5:06	5:05	5:03	5:02	5:00	4:59	4:58	4:57	4:55	4:54	4:53	4:52	4:51	4:50	4:48	4:47	4:46	4:46	4:45	4:44	4:43	4:42	4:41	4:41	4:40
Sunset (PM)	7:20	7:22	7:23	7:24	7:26	7:27	7:28	7:29	7:31	7:32	7:33	7:35	7:36	7:37	7:38	7:39	7:41	7:42	7:43	7:44	7:45	7:47	7:48	7:49	7:50	7:51	7:52	7:53	7:54	7:55	7:56

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.1	5:15	7:20
2	14.1	5:14	7:22
3	14.2	5:12	7:23
4	14.2	5:10	7:24
5	14.3	5:09	7:26
6	14.3	5:07	7:27
7	14.4	5:06	7:28
8	14.4	5:05	7:29
9	14.5	5:03	7:31
10	14.5	5:02	7:32
11	14.5	5:00	7:33
12	14.6	4:59	7:35
13	14.6	4:58	7:36
14	14.7	4:57	7:37
15	14.7	4:55	7:38
16	14.8	4:54	7:39
17	14.8	4:53	7:41
18	14.8	4:52	7:42
19	14.9	4:51	7:43
20	14.9	4:50	7:44
21	14.9	4:48	7:45
22	15.0	4:47	7:47
23	15.0	4:46	7:48
24	15.1	4:46	7:49
25	15.1	4:45	7:50
26	15.1	4:44	7:51
27	15.1	4:43	7:52
28	15.2	4:42	7:53
29	15.2	4:41	7:54
30	15.2	4:41	7:55
31	15.3	4:40	7:56

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.42 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 5.74 kWh/m² in June across the year — May's 5.42 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.6
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.1	Bright
2	5.1	Bright
3	5.1	Bright
4	5.2	Bright
5	5.2	Bright
6	5.2	Bright
7	5.2	Bright
8	5.2	Bright
9	5.2	Bright
10	5.3	Bright
11	5.3	Bright
12	5.3	Bright
13	5.3	Bright
14	5.4	Bright
15	5.4	Bright
16	5.4	Bright
17	5.4	Bright
18	5.5	Bright
19	5.5	Bright
20	5.5	Bright
21	5.5	Bright
22	5.6	Bright
23	5.6	Bright
24	5.6	Bright
25	5.6	Bright
26	5.6	Bright
27	5.6	Bright
28	5.6	Bright
29	5.6	Bright
30	5.6	Bright
31	5.6	Bright

Planning a trip in May

Is May a good time to visit Sondrio?

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

2.5

Sightseeing

5th-best month of the year

0.0

Beach & pool

5th-best month of the year

May is a weaker month for outdoor sightseeing in Sondrio.

What to pack for Sondrio in May

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

In May, Sondrio sees daytime highs around 12°C and nights near 3°C. Pack a warm layer and rain gear. Worth having: sun protection. About 18 days see rain.

a warm layerrain gearsun protection

UV index in Sondrio in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Sondrio peaks around July 15 at about 9 (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	7	8	8	9	8	5	4	2	1
Level	Low	Moderate	Moderate	High	Very high	Very high	Very high	Very high	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	3	Moderate
Mar	5	Moderate
Apr	7	High
May	8	Very high
Jun	8	Very high
Jul	9	Very high
Aug	8	Very high
Sep	5	Moderate
Oct	4	Moderate
Nov	2	Low
Dec	1	Low

Air quality in Sondrio in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sondrio is worst in June — around 24 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 10 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Sondrio's WHO annual average of 16.5 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	14	15	20	22	19	24	20	17	14	12	10	11
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	14	Moderate
Feb	15	Moderate
Mar	20	Moderate
Apr	22	Moderate
May	19	Moderate
Jun	24	Moderate
Jul	20	Moderate
Aug	17	Moderate
Sep	14	Moderate
Oct	12	Moderate
Nov	10	Good
Dec	11	Good

Location & terrain

Where is Sondrio?

Sondrio sits at 46.2°N, 9.9°E, 307 m above sea level, in Italy. The nearest listed city is St. Moritz, 37 km away.

Topography around Sondrio

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

Within 3 km, the terrain around Sondrio has very significant variations in elevation — a maximum elevation change of 1,233 m around an average of 579 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,338 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,874 m.

The land around Sondrio is covered by trees (70%) within 3 km, trees (55%) and grassland (29%) within 16 km, and trees (49%) and grassland (27%) within 80 km.

3 km

1,233 m

trees 70%

16 km

3,338 m

trees 55%

80 km

3,874 m

trees 49%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen

← April Sondrio year-round climate June →Best places to visit in May

May weather nearby: St. Moritz 37 km · Lecco 50 km · Bergamo 55 km · Seriate 55 km · Dalmine 61 km · Palazzolo sull'Oglio 64 km · Erba 64 km · San Sebastiano 65 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 Sondrio (46.1685°, 9.8713°, elevation 307 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. 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).

	Avg high (°C)	Avg low (°C)
1	9	1
2	10	1
3	10	1
4	10	2
5	10	2
6	10	2
7	10	2
8	11	2
9	11	2
10	11	2
11	11	3
12	11	3
13	11	3
14	12	3
15	12	3
16	12	3
17	12	3
18	12	4
19	12	4
20	13	4
21	13	4
22	13	4
23	13	4
24	13	4
25	13	5
26	14	5
27	14	5
28	14	5
29	14	5
30	14	5
31	14	5

	Clearer (%)	Cloudier (%)
1	31	69
2	30	70
3	30	70
4	30	70
5	30	70
6	30	70
7	31	69
8	31	69
9	31	69
10	32	68
11	32	68
12	32	68
13	33	67
14	33	67
15	33	67
16	34	66
17	35	65
18	36	64
19	36	64
20	37	63
21	37	63
22	37	63
23	39	61
24	39	61
25	39	61
26	38	62
27	38	62
28	39	61
29	39	61
30	39	61
31	39	61

	Rain chance (%)	Snow chance (%)
1	56	17
2	56	17
3	57	16
4	57	15
5	57	15
6	58	14
7	58	13
8	58	13
9	58	12
10	58	11
11	59	11
12	59	10
13	59	9
14	59	9
15	59	8
16	59	8
17	59	7
18	59	7
19	58	6
20	58	6
21	58	6
22	58	5
23	58	5
24	58	5
25	58	4
26	59	4
27	60	4
28	60	4
29	61	3
30	62	3
31	63	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	9	1
2	10	1
3	10	1
4	10	2
5	10	2
6	10	2
7	10	2
8	11	2
9	11	2
10	11	2
11	11	3
12	11	3
13	11	3
14	12	3
15	12	3
16	12	3
17	12	3
18	12	4
19	12	4
20	13	4
21	13	4
22	13	4
23	13	4
24	13	4
25	13	5
26	14	5
27	14	5
28	14	5
29	14	5
30	14	5
31	14	5

	Clearer (%)	Cloudier (%)
1	31	69
2	30	70
3	30	70
4	30	70
5	30	70
6	30	70
7	31	69
8	31	69
9	31	69
10	32	68
11	32	68
12	32	68
13	33	67
14	33	67
15	33	67
16	34	66
17	35	65
18	36	64
19	36	64
20	37	63
21	37	63
22	37	63
23	39	61
24	39	61
25	39	61
26	38	62
27	38	62
28	39	61
29	39	61
30	39	61
31	39	61

	Rain chance (%)	Snow chance (%)
1	56	17
2	56	17
3	57	16
4	57	15
5	57	15
6	58	14
7	58	13
8	58	13
9	58	12
10	58	11
11	59	11
12	59	10
13	59	9
14	59	9
15	59	8
16	59	8
17	59	7
18	59	7
19	58	6
20	58	6
21	58	6
22	58	5
23	58	5
24	58	5
25	58	4
26	59	4
27	60	4
28	60	4
29	61	3
30	62	3
31	63	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	9	1
2	10	1
3	10	1
4	10	2
5	10	2
6	10	2
7	10	2
8	11	2
9	11	2
10	11	2
11	11	3
12	11	3
13	11	3
14	12	3
15	12	3
16	12	3
17	12	3
18	12	4
19	12	4
20	13	4
21	13	4
22	13	4
23	13	4
24	13	4
25	13	5
26	14	5
27	14	5
28	14	5
29	14	5
30	14	5
31	14	5

	Clearer (%)	Cloudier (%)
1	31	69
2	30	70
3	30	70
4	30	70
5	30	70
6	30	70
7	31	69
8	31	69
9	31	69
10	32	68
11	32	68
12	32	68
13	33	67
14	33	67
15	33	67
16	34	66
17	35	65
18	36	64
19	36	64
20	37	63
21	37	63
22	37	63
23	39	61
24	39	61
25	39	61
26	38	62
27	38	62
28	39	61
29	39	61
30	39	61
31	39	61

	Rain chance (%)	Snow chance (%)
1	56	17
2	56	17
3	57	16
4	57	15
5	57	15
6	58	14
7	58	13
8	58	13
9	58	12
10	58	11
11	59	11
12	59	10
13	59	9
14	59	9
15	59	8
16	59	8
17	59	7
18	59	7
19	58	6
20	58	6
21	58	6
22	58	5
23	58	5
24	58	5
25	58	4
26	59	4
27	60	4
28	60	4
29	61	3
30	62	3
31	63	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100