Sullana in Summer
In summer (December, January and February), Sullana sees average daytime highs around 32°C and overnight lows near 22°C, with 128 mm of rain over about 19 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 30°C in early December to 33°C by late February. The sky is clear or mostly clear about 15% of the time across summer, and the air most often feels muggy.
Summer is Sullana's 3rd-best season to visit on our travel score. For the whole year in context, see Sullana's year-round climate.
- Avg daytime high
- 32°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 128 mm
- 19 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.0
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Sullana in Summer
Over the season highs climb from about 30°C in early December to 33°C by late February.
A typical summer day in Sullana reaches about 32°C and drops to 22°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Sullana
Once humidity and wind are folded in, summer brings about 71 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Sullana 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 | 33° / 22° | 35 | 5.2 | 12.3 | 3.8 |
| Feb | 33° / 23° | 75 | 9.9 | 12.2 | 3.1 |
| Mar | 33° / 23° | 114 | 11.2 | 12 | 3.0 |
| Apr | 33° / 22° | 42 | 6.5 | 11.9 | 3.7 |
| May | 32° / 20° | 5 | 1.8 | 11.8 | 5.1 |
| Jun | 29° / 19° | 2 | 0.8 | 11.7 | 6.8 |
| Jul | 28° / 18° | 1 | 0.2 | 11.7 | 8.1 |
| Aug | 27° / 17° | 0 | 0.1 | 11.8 | 8.4 |
| Sep | 28° / 17° | 1 | 0.4 | 12 | 7.7 |
| Oct | 29° / 18° | 3 | 0.9 | 12.1 | 6.8 |
| Nov | 30° / 18° | 7 | 1.8 | 12.2 | 6.1 |
| Dec | 31° / 20° | 19 | 3.8 | 12.3 | 5.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 15% of the time across summer.
Chance of precipitation in Summer
Sullana gets around 128 mm of rain over 19 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 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 18 min in early December to 12 h 06 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 5.7 kWh/m².
Is summer a good time to visit Sullana?
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 a weaker month for outdoor sightseeing in Sullana. The water and warmth also suit a beach or pool day.
What to pack for Sullana in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sullana sees daytime highs around 32°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 19 days see rain.
Sea temperature near Sullana in Summer
The nearest coast averages about 22°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 49 km away) is warmest in February at about 23°C and coldest in August near 18°C.
It's comfortable for a long swim from Dec 15 to May 28 — about 5.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 22 | 23 | 23 | 21 | 20 | 19 | 19 | 18 | 18 | 19 | 19 | 20 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 21 | Refreshing |
| May | 20 | Refreshing |
| Jun | 19 | Cool |
| Jul | 19 | Cool |
| Aug | 18 | Cool |
| Sep | 18 | Cool |
| Oct | 19 | Cool |
| Nov | 19 | Cool |
| Dec | 20 | Refreshing |
UV index in Sullana 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 Sullana peaks around February 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).
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 | 13 | 10 | 10 | 11 | 12 | 14 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Sullana?
Sullana sits at 4.9°S, 80.7°W, 60 m above sea level, in Peru. The nearest listed city is Marcavelica, 4.0 km away.
Topography around Sullana
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sullana.
Within 3 km, the terrain around Sullana has only modest variations in elevation — a maximum elevation change of 71 m around an average of 61 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 143 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,919 m.
The land around Sullana is covered by artificial surfaces (41%) and trees (22%) within 3 km, shrubs (28%) and bare terrain (28%) within 16 km, and shrubs (31%) and bare terrain (30%) 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 Sullana (-4.9039°, -80.6853°, elevation 60 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.