Castro weather in July

In July, Castro sees average daytime highs of 10°C and overnight lows near 4°C, with 174 mm of precipitation across 17.9 wet days and about 9.2 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 12% of the time in July, and the air most often feels dry.

Daylight stretches from about 8 h 54 min at the start of July to 9 h 36 min by month's end. Set against the rest of the year, July is Castro's 7th-clearest and 3rd-windiest month. For the whole year in context, see Castro's year-round climate.

Daytime high
10°
12th warmest
Overnight low
1st coldest
Precipitation
174 mm
17.9 wet days
Daylight
9 h 12 min
9:25 AM – 6:36 PM
Cloud cover
73%
7th clearest
Wind
11 km/h
3rd windiest
Solar energy
1.39 kWh/m²
Travel score
1.8
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.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 10°C through the month.

A typical July day in Castro reaches about 10°C in the afternoon and slips back to 4°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 12°C. Set against its neighbours, July runs on par with June and about 1°C cooler than August.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1104
2104
3104
4104
5104
6104
7104
8104
9104
10104
11104
12104
13104
14104
15104
16104
17104
18104
19104
20104
21104
22104
23104
24104
25104
26104
27104
28104
29104
30104
31104

Castro weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 10°639.814.86.2
Feb20° / 10°568.313.76.4
Mar18° / 8611.512.45.6
Apr15° / 11213.610.94.0
May12° / 17217.39.62.7
Jun10° / 19219.38.91.8
Jul10° / 17417.99.21.8
Aug11° / 19619.910.32.0
Sep12° / 13016.211.72.8
Oct14° / 12416.313.23.5
Nov16° / 9813.414.44.4
Dec18° / 8212.615.15.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 16% of July, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32575
42674
52674
62773
72773
82773
92773
102773
112872
122872
132872
142971
152971
162971
172971
182872
192971
202971
212971
222971
233070
243070
253070
263070
273070
283070
293070
303070
313070

Chance of precipitation in July

Any precipitation

Castro gets around 174 mm of rain and snow over 17.9 wet days in July. 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 62% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)
162
262
362
461
561
660
760
859
959
1059
1159
1259
1359
1459
1558
1658
1758
1858
1958
2058
2158
2258
2358
2458
2558
2658
2758
2859
2959
3060
3160

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July 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 July

Winds average 11 km/h in July.

Across July, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 8 h 54 min at the start of July to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over July. Sunrise moves from 9:31 AM to 9:12 AM, and sunset from 6:26 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.99:316:26
28.99:316:27
38.99:316:27
49.09:306:28
59.09:306:28
69.09:306:29
79.09:306:29
89.09:296:30
99.09:296:31
109.09:296:31
119.19:286:32
129.19:286:33
139.19:276:34
149.19:276:34
159.29:266:35
169.29:256:36
179.29:256:37
189.29:246:38
199.39:236:38
209.39:236:39
219.39:226:40
229.39:216:41
239.49:206:42
249.49:196:43
259.49:196:44
269.59:186:45
279.59:176:46
289.59:166:47
299.69:156:48
309.69:146:49
319.69:126:50

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 1.39 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 — July's 1.39 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.2Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.2Dim
71.3Dim
81.3Dim
91.3Dim
101.3Dim
111.3Dim
121.3Dim
131.3Dim
141.3Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.5Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in July

Is July a good time to visit Castro?

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

1.8
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

July is a weaker month for outdoor sightseeing in Castro.

What to pack for Castro in July

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

In July, Castro sees daytime highs around 10°C and nights near 4°C. Pack a warm layer and rain gear. About 18 days see rain.

a warm layerrain gear

Sea temperature near Castro in July

The nearest coast averages about 11°C in July — 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.

10°12°14°16°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr13Bracing
May12Bracing
Jun12Bracing
Jul11Bracing
Aug11Bracing
Sep11Bracing
Oct11Bracing
Nov12Bracing
Dec13Bracing

UV index in Castro in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 2. 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateLowModerateHighVery highExtremeDec 23UV 12Jun 20UV 1
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar7High
Apr4Moderate
May2Moderate
Jun1Low
Jul2Low
Aug2Moderate
Sep4Moderate
Oct7High
Nov8Very high
Dec12Extreme
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
16 km
835 m
80 km
847 m
treesgrasslandartificial surfaceswater
July 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
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 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 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).