La Unión weather in July

In July, La Unión sees average daytime highs of 25°C and overnight lows near 18°C, with 0 mm of rain across 0.1 wet days and about 11.7 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 60% of the time in July, and the air most often feels humid.

Daylight stretches from about 11 h 42 min at the start of July to 11 h 48 min by month's end. Set against the rest of the year, July is La Unión's 2nd-clearest and 4th-windiest month. For the whole year in context, see La Unión's year-round climate.

Daytime high
25°
11th warmest
Overnight low
18°
4th coldest
Rainfall
0 mm
0.1 wet days
Daylight
11 h 42 min
6:37 AM – 6:20 PM
Cloud cover
40%
2nd clearest
Wind
15 km/h
4th windiest
Solar energy
5.43 kWh/m²
Travel score
8.8
out of 10

La Unión is city in Piura, Peru.

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 25°C through the month.

A typical July day in La Unión reaches about 25°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, July runs about 1°C cooler than June and on par with August.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12618
22618
32518
42518
52518
62518
72518
82518
92518
102518
112518
122518
132518
142518
152518
162518
172518
182518
192518
202518
212518
222518
232518
242518
252518
262518
272518
282518
292518
302518
312518

How July really feels in La Unión

Once humidity and wind are folded in, July 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

La Unión weather by month

How July compares with the rest of the year at a glance. July is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°232.712.35.5
Feb31° / 23°375.612.24.7
Mar31° / 23°586.9124.5
Apr30° / 22°213.611.95.6
May29° / 20°31.111.87.1
Jun26° / 19°10.311.78.4
Jul25° / 18°00.111.78.8
Aug25° / 17°00.111.89.0
Sep26° / 17°10.3128.5
Oct26° / 18°20.812.18.1
Nov27° / 18°41.212.27.7
Dec29° / 20°102.612.36.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37525
47624
57723
67822
77822
87921
97921
108020
118020
128119
138119
148119
158218
168218
178218
188317
198317
208317
218317
228317
238218
248218
258218
268317
278317
288317
298416
308515
318515

Chance of precipitation in July

Any precipitation

La Unión gets around 0 mm of rain over 0.1 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 0% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
251
261
271
281
291
301
311

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
123725
224715
325705
426695
527685
628684
729674
831654
932644
1034624
1135614
1237594
1338593
1439583
1541563
1642553
1743543
1844533
1944533
2045523
2146513
2247503
2347493
2448493
2549483
2649473
2750473
2851463
2952453
3053443
3154433

Wind in July

Winds average 15 km/h in July.

Across July, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 11 h 42 min at the start of July to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over July. Sunrise moves from 6:36 AM to 6:36 AM, and sunset from 6:17 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:366:17
211.76:366:17
311.76:366:17
411.76:366:18
511.76:366:18
611.76:366:18
711.76:366:18
811.76:376:19
911.76:376:19
1011.76:376:19
1111.76:376:19
1211.76:376:19
1311.76:376:19
1411.76:376:20
1511.76:376:20
1611.76:376:20
1711.76:376:20
1811.76:376:20
1911.76:376:21
2011.76:376:21
2111.76:376:21
2211.76:376:21
2311.76:376:21
2411.76:376:21
2511.76:376:21
2611.76:376:21
2711.76:376:22
2811.76:376:22
2911.86:376:22
3011.86:366:22
3111.86:366:22

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.43 kWh/m².

For context, solar energy here swings from a low near 5.3 kWh/m² to a high of 6.62 kWh/m² in October across the year — July's 5.43 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Is July a good time to visit La Unión?

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

8.8
Sightseeing
2nd-best month of the year
7.9
Beach & pool
6th-best month of the year

July is one of the better times to visit La Unión for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for La Unión in July

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

In July, La Unión sees daytime highs around 25°C and nights near 18°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near La Unión in July

The nearest coast averages about 18°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 29 km away) is warmest in February at about 23°C and coldest in September near 18°C.

It's comfortable for a long swim from Dec 25 to May 15 — about 4.7 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb23Refreshing
Mar23Refreshing
Apr21Refreshing
May20Refreshing
Jun19Cool
Jul18Cool
Aug18Cool
Sep18Cool
Oct18Cool
Nov19Cool
Dec20Cool

UV index in La Unión in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Unión peaks around February 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeFeb 19UV 16Jun 22UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr13Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is La Unión?

La Unión sits at 5.4°S, 80.7°W, 15 m above sea level, in Peru. The nearest listed city is Catacaos, 16 km away.

Topography around La Unión

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

Within 3 km, the terrain around La Unión has only modest variations in elevation — a maximum elevation change of 25 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 76 m; within 80 km, significant variations in elevation — a maximum elevation change of 588 m.

The land around La Unión is covered by cropland (57%) within 3 km, bare terrain (50%) and cropland (33%) within 16 km, and bare terrain (47%) and water (24%) within 80 km.

3 km
25 m
16 km
76 m
80 km
588 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Catacaos 16 km · Sechura 19 km · San Martin 25 km · Piura 26 km · Paita 54 km · Sullana 56 km · Marcavelica 58 km · Querecotillo 64 km

Peru travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
220 V · 60 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$9,684
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
8.6
per 100k, 2021
Road deaths
13.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 519
Religion
Catholic 76%Evangelical Christian 16%no religion 5%other religions 3%

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 La Unión (-5.4023°, -80.7422°, elevation 15 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).