Santiago de Cao in Summer
In summer (December, January and February), Santiago de Cao sees average daytime highs around 23°C and overnight lows near 20°C, with 28 mm of rain over about 7 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 20°C in early December to 25°C by late February. The sky is clear or mostly clear about 9% of the time across summer, and the air most often feels muggy.
Summer is Santiago de Cao's 3rd-best season to visit on our travel score. Santiago de Cao has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Santiago de Cao's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 28 mm
- 7 wet days
- Avg wind
- 13 km/h
- Travel score
- 7.5
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Santiago de Cao in Summer
Over the season highs climb from about 20°C in early December to 25°C by late February.
A typical summer day in Santiago de Cao reaches about 23°C and drops to 20°C overnight. The warmest of the three months is February, the coolest December.
Santiago de Cao weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 20° | 8 | 2.3 | 12.4 | 7.7 |
| Feb | 25° / 22° | 16 | 3.9 | 12.3 | 7.4 |
| Mar | 24° / 21° | 17 | 5.1 | 12.1 | 7.2 |
| Apr | 23° / 20° | 7 | 1.7 | 11.8 | 7.8 |
| May | 21° / 18° | 1 | 0.3 | 11.6 | 7.9 |
| Jun | 20° / 17° | 1 | 0 | 11.5 | 7.9 |
| Jul | 19° / 16° | 2 | 0.1 | 11.6 | 7.7 |
| Aug | 18° / 16° | 3 | 0.3 | 11.7 | 7.6 |
| Sep | 18° / 16° | 2 | 0.2 | 12 | 7.3 |
| Oct | 19° / 16° | 2 | 0.3 | 12.2 | 7.2 |
| Nov | 20° / 17° | 2 | 0.4 | 12.4 | 7.3 |
| Dec | 21° / 18° | 4 | 1.1 | 12.5 | 7.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 9% of the time across summer.
Chance of precipitation in Summer
Santiago de Cao gets around 28 mm of rain over 7 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 13 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 24 min in early December to 12 h 12 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.3 kWh/m².
Is summer a good time to visit Santiago de Cao?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Santiago de Cao for general sightseeing.
What to pack for Santiago de Cao in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Santiago de Cao sees daytime highs around 23°C and nights near 20°C. Pack sun protection. Worth having: light clothes. About 7 days see rain.
Sea temperature near Santiago de Cao in Summer
The nearest coast averages about 21°C across summer — 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 February at about 22°C and coldest in October near 17°C.
It's comfortable for a long swim from Jan 3 to Apr 17 — about 3.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 22 | 22 | 20 | 19 | 19 | 18 | 17 | 17 | 17 | 18 | 19 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 20 | Refreshing |
| May | 19 | Cool |
| Jun | 19 | Cool |
| Jul | 18 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 17 | Cool |
| Nov | 18 | Cool |
| Dec | 19 | Cool |
UV index in Santiago de Cao in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santiago de Cao peaks around February 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 16 | 15 | 13 | 11 | 9 | 10 | 11 | 11 | 13 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Santiago de Cao?
Santiago de Cao sits at 8.0°S, 79.2°W, 18 m above sea level, in Peru. The nearest listed city is Chocope, 19 km away.
Topography around Santiago de Cao
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santiago de Cao.
Within 3 km, the terrain around Santiago de Cao has only modest variations in elevation — a maximum elevation change of 33 m around an average of 13 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 940 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,279 m.
The land around Santiago de Cao is covered by cropland (53%) and water (21%) within 3 km, water (45%), bare terrain (23%) and cropland (22%) within 16 km, and water (36%) and bare terrain (31%) within 80 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
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 Santiago de Cao (-7.9589°, -79.2392°, elevation 18 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.