Castro weather in March

In March, Castro sees average daytime highs of 18°C and overnight lows near 9°C, with 86 mm of rain across 11.5 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 17°C by the end. The sky is clear or mostly clear about 23% of the time in March, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of March to 11 h 36 min by month's end. Set against the rest of the year, March is Castro's 3rd-clearest and 12th-windiest month. For the whole year in context, see Castro's year-round climate.

Daytime high: 18°; 3rd warmest
Overnight low: 9°; 9th coldest
Rainfall: 86 mm; 11.5 wet days
Daylight: 12 h 24 min; 7:54 AM – 8:15 PM
Cloud cover: 64%; 3rd clearest
Wind: 9 km/h; 12th windiest
Solar energy: 3.91 kWh/m²
Travel score: 5.6; out of 10

Castro is Chilean city.

Density: 2,926/km²; people per km²
Founded: 1567

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

← February Castro year-round climate April →Best places to visit in March

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 17°C by the end.

A typical March day in Castro reaches about 18°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 22°C. Set against its neighbours, March runs about 2°C cooler than February and about 3°C warmer than April.

	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)	19	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17
Avg low (°C)	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8

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

Castro weather by month

How March compares with the rest of the year at a glance. March is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	20° / 10°	63	9.8	14.8	6.2
Feb	20° / 10°	56	8.3	13.7	6.4
Mar	18° / 9°	86	11.5	12.4	5.6
Apr	15° / 7°	112	13.6	10.9	4.0
May	12° / 6°	172	17.3	9.6	2.7
Jun	10° / 5°	192	19.3	8.9	1.8
Jul	10° / 4°	174	17.9	9.2	1.8
Aug	11° / 4°	196	19.9	10.3	2.0
Sep	12° / 5°	130	16.2	11.7	2.8
Oct	14° / 6°	124	16.3	13.2	3.5
Nov	16° / 7°	98	13.4	14.4	4.4
Dec	18° / 9°	82	12.6	15.1	5.4

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 61%.

	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 (%)	42	41	42	42	42	42	41	41	41	41	41	39	39	39	39	38	37	37	36	36	36	35	35	35	36	35	36	36	36	36	36
Cloudier (%)	58	59	58	58	58	58	59	59	59	59	59	61	61	61	61	62	63	63	64	64	64	65	65	65	64	65	64	64	64	64	64

	Clearer (%)	Cloudier (%)
1	42	58
2	41	59
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	41	59
9	41	59
10	41	59
11	41	59
12	39	61
13	39	61
14	39	61
15	39	61
16	38	62
17	37	63
18	37	63
19	36	64
20	36	64
21	36	64
22	35	65
23	35	65
24	35	65
25	36	64
26	35	65
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

Chance of precipitation in March

Any precipitation

Castro gets around 86 mm of rain over 11.5 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 38% on the wettest days.

	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 (%)	34	34	35	35	36	36	37	37	37	37	37	37	37	37	37	37	37	37	38	37	37	37	37	37	37	37	37	37	37	38	38

	Rain chance (%)
1	34
2	34
3	35
4	35
5	36
6	36
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	38
20	37
21	37
22	37
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

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 92% 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 (%)	89	89	89	89	90	90	90	90	90	90	90	90	90	91	91	92	92	92	93	93	93	94	94	94	95	95	96	96	96	96	96
Comfortable (%)	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	8	8	8	7	7	7	6	6	6	5	5	4	4	4	4	4
Humid (%)	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	89	10	1
2	89	10	1
3	89	10	1
4	89	10	1
5	90	10	0
6	90	10	0
7	90	10	0
8	90	10	0
9	90	10	0
10	90	10	0
11	90	10	0
12	90	10	0
13	90	10	0
14	91	9	0
15	91	9	0
16	92	8	0
17	92	8	0
18	92	8	0
19	93	7	0
20	93	7	0
21	93	7	0
22	94	6	0
23	94	6	0
24	94	6	0
25	95	5	0
26	95	5	0
27	96	4	0
28	96	4	0
29	96	4	0
30	96	4	0
31	96	4	0

Wind in March

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

Across March, 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.

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

Sunrise & sunset in March

DaylightNight

Daylight runs from about 13 h 06 min at the start of March to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over March. Sunrise moves from 7:36 AM to 8:11 AM, and sunset from 8:41 PM to 7:49 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)	13.1	13.0	13.0	12.9	12.9	12.8	12.8	12.7	12.7	12.6	12.6	12.6	12.5	12.5	12.4	12.4	12.3	12.3	12.2	12.2	12.1	12.1	12.0	12.0	11.9	11.9	11.8	11.8	11.7	11.7	11.6
Sunrise (AM)	7:36	7:37	7:38	7:40	7:41	7:42	7:43	7:44	7:46	7:47	7:48	7:49	7:50	7:52	7:53	7:54	7:55	7:56	7:58	7:59	8:00	8:01	8:02	8:03	8:05	8:06	8:07	8:08	8:09	8:10	8:11
Sunset (PM)	8:41	8:39	8:38	8:36	8:34	8:33	8:31	8:29	8:28	8:26	8:24	8:22	8:21	8:19	8:17	8:15	8:14	8:12	8:10	8:08	8:07	8:05	8:03	8:01	7:59	7:58	7:56	7:54	7:52	7:50	7:49

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.1	7:36	8:41
2	13.0	7:37	8:39
3	13.0	7:38	8:38
4	12.9	7:40	8:36
5	12.9	7:41	8:34
6	12.8	7:42	8:33
7	12.8	7:43	8:31
8	12.7	7:44	8:29
9	12.7	7:46	8:28
10	12.6	7:47	8:26
11	12.6	7:48	8:24
12	12.6	7:49	8:22
13	12.5	7:50	8:21
14	12.5	7:52	8:19
15	12.4	7:53	8:17
16	12.4	7:54	8:15
17	12.3	7:55	8:14
18	12.3	7:56	8:12
19	12.2	7:58	8:10
20	12.2	7:59	8:08
21	12.1	8:00	8:07
22	12.1	8:01	8:05
23	12.0	8:02	8:03
24	12.0	8:03	8:01
25	11.9	8:05	7:59
26	11.9	8:06	7:58
27	11.8	8:07	7:56
28	11.8	8:08	7:54
29	11.7	8:09	7:52
30	11.7	8:10	7:50
31	11.6	8:11	7:49

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 3.91 kWh/m².

For context, solar energy here swings from a low near 1.16 kWh/m² to a high of 6.04 kWh/m² in January across the year — March's 3.91 kWh/m² falls in the middle.

	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)	4.6	4.6	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.2	4.1	4.0	4.0	4.0	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.6	3.6	3.5	3.5	3.4	3.4	3.4	3.3	3.3
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.6	Bright
2	4.6	Bright
3	4.5	Bright
4	4.5	Bright
5	4.4	Bright
6	4.4	Bright
7	4.3	Bright
8	4.3	Bright
9	4.2	Bright
10	4.2	Bright
11	4.2	Bright
12	4.1	Bright
13	4.0	Bright
14	4.0	Bright
15	4.0	Moderate
16	3.9	Moderate
17	3.9	Moderate
18	3.8	Moderate
19	3.8	Moderate
20	3.7	Moderate
21	3.7	Moderate
22	3.6	Moderate
23	3.6	Moderate
24	3.6	Moderate
25	3.5	Moderate
26	3.5	Moderate
27	3.4	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.3	Moderate
31	3.3	Moderate

Planning a trip in March

Is March a good time to visit Castro?

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

5.6

Sightseeing

3rd-best month of the year

1.8

Beach & pool

3rd-best month of the year

March is a reasonable time to visit Castro for sightseeing.

What to pack for Castro in March

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

In March, Castro sees daytime highs around 18°C and nights near 9°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Castro 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 31 km away) is warmest in January at about 14°C and coldest in August near 11°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	14	14	14	13	12	12	11	11	11	11	12	13
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	14	Bracing
Feb	14	Bracing
Mar	14	Bracing
Apr	13	Bracing
May	12	Bracing
Jun	12	Bracing
Jul	11	Bracing
Aug	11	Bracing
Sep	11	Bracing
Oct	11	Bracing
Nov	12	Bracing
Dec	13	Bracing

UV index in Castro in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March 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 Castro peaks around December 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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)	11	11	7	4	2	1	2	2	4	7	8	12
Level	Extreme	Extreme	High	Moderate	Moderate	Low	Low	Moderate	Moderate	High	Very high	Extreme

	UV index (midday)	Level
Jan	11	Extreme
Feb	11	Extreme
Mar	7	High
Apr	4	Moderate
May	2	Moderate
Jun	1	Low
Jul	2	Low
Aug	2	Moderate
Sep	4	Moderate
Oct	7	High
Nov	8	Very high
Dec	12	Extreme

Location & terrain

Where is Castro?

Castro sits at 42.5°S, 73.8°W, 81 m above sea level, in Chile. The nearest listed city is Ancud, 67 km away.

Topography around Castro

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

Within 3 km, the terrain around Castro has significant variations in elevation — a maximum elevation change of 306 m around an average of 69 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 835 m; within 80 km, large variations in elevation — a maximum elevation change of 847 m.

The land around Castro is covered by trees (39%), water (27%) and grassland (20%) within 3 km, trees (54%) and grassland (25%) within 16 km, and water (58%) and trees (34%) within 80 km.

3 km

306 m

trees 39%

16 km

835 m

trees 54%

80 km

847 m

water 58%

treesgrasslandartificial surfaceswater

← February Castro year-round climate April →Best places to visit in March

March weather nearby: Ancud 67 km · Quellón 73 km · Calbuco 94 km · Maullín 96 km · Puerto Montt 131 km · Puerto Varas 144 km · Llanquihue 149 km · Frutillar 161 km

Chile travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F / L; 220 V · 50 Hz
Prices: ≈ 48% of US; price level, 2025
GDP per capita: $17,995; 2025
Happiness: 6.3 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 6.3; per 100k, 2023
Road deaths: 14.9; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 517
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 Castro (-42.4721°, -73.7732°, elevation 81 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).

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

	Clearer (%)	Cloudier (%)
1	42	58
2	41	59
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	41	59
9	41	59
10	41	59
11	41	59
12	39	61
13	39	61
14	39	61
15	39	61
16	38	62
17	37	63
18	37	63
19	36	64
20	36	64
21	36	64
22	35	65
23	35	65
24	35	65
25	36	64
26	35	65
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	34
2	34
3	35
4	35
5	36
6	36
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	38
20	37
21	37
22	37
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	10	1
2	89	10	1
3	89	10	1
4	89	10	1
5	90	10	0
6	90	10	0
7	90	10	0
8	90	10	0
9	90	10	0
10	90	10	0
11	90	10	0
12	90	10	0
13	90	10	0
14	91	9	0
15	91	9	0
16	92	8	0
17	92	8	0
18	92	8	0
19	93	7	0
20	93	7	0
21	93	7	0
22	94	6	0
23	94	6	0
24	94	6	0
25	95	5	0
26	95	5	0
27	96	4	0
28	96	4	0
29	96	4	0
30	96	4	0
31	96	4	0

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

	Clearer (%)	Cloudier (%)
1	42	58
2	41	59
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	41	59
9	41	59
10	41	59
11	41	59
12	39	61
13	39	61
14	39	61
15	39	61
16	38	62
17	37	63
18	37	63
19	36	64
20	36	64
21	36	64
22	35	65
23	35	65
24	35	65
25	36	64
26	35	65
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	34
2	34
3	35
4	35
5	36
6	36
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	38
20	37
21	37
22	37
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	10	1
2	89	10	1
3	89	10	1
4	89	10	1
5	90	10	0
6	90	10	0
7	90	10	0
8	90	10	0
9	90	10	0
10	90	10	0
11	90	10	0
12	90	10	0
13	90	10	0
14	91	9	0
15	91	9	0
16	92	8	0
17	92	8	0
18	92	8	0
19	93	7	0
20	93	7	0
21	93	7	0
22	94	6	0
23	94	6	0
24	94	6	0
25	95	5	0
26	95	5	0
27	96	4	0
28	96	4	0
29	96	4	0
30	96	4	0
31	96	4	0

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

	Clearer (%)	Cloudier (%)
1	42	58
2	41	59
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	41	59
9	41	59
10	41	59
11	41	59
12	39	61
13	39	61
14	39	61
15	39	61
16	38	62
17	37	63
18	37	63
19	36	64
20	36	64
21	36	64
22	35	65
23	35	65
24	35	65
25	36	64
26	35	65
27	36	64
28	36	64
29	36	64
30	36	64
31	36	64

	Rain chance (%)
1	34
2	34
3	35
4	35
5	36
6	36
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	38
20	37
21	37
22	37
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	10	1
2	89	10	1
3	89	10	1
4	89	10	1
5	90	10	0
6	90	10	0
7	90	10	0
8	90	10	0
9	90	10	0
10	90	10	0
11	90	10	0
12	90	10	0
13	90	10	0
14	91	9	0
15	91	9	0
16	92	8	0
17	92	8	0
18	92	8	0
19	93	7	0
20	93	7	0
21	93	7	0
22	94	6	0
23	94	6	0
24	94	6	0
25	95	5	0
26	95	5	0
27	96	4	0
28	96	4	0
29	96	4	0
30	96	4	0
31	96	4	0