Arenillas in Winter
In winter (June, July and August), Arenillas sees average daytime highs around 26°C and overnight lows near 20°C, with 163 mm of rain over about 43 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 26°C. The sky is clear or mostly clear about 0% of the time across winter, and the air most often feels muggy.
Winter is Arenillas's 2nd-best season to visit on our travel score. Arenillas 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 Arenillas's year-round climate.
- Avg daytime high
- 26°C
- coldest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 163 mm
- 43 wet days
- Avg wind
- 6 km/h
- Travel score
- 5.6
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Arenillas in Winter
Across winter, daytime highs hold fairly steady around 26°C.
A typical winter day in Arenillas reaches about 26°C and drops to 20°C overnight. The warmest of the three months is June, the coolest August.
How winter really feels in Arenillas
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Arenillas weather by month
How the three winter months (June, July and August) 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 | 28° / 22° | 246 | 26.5 | 12.2 | 3.4 |
| Feb | 29° / 23° | 366 | 26.3 | 12.1 | 3.0 |
| Mar | 29° / 23° | 461 | 27.9 | 12 | 3.1 |
| Apr | 29° / 23° | 298 | 25.5 | 11.9 | 3.3 |
| May | 28° / 22° | 192 | 24.7 | 11.8 | 3.8 |
| Jun | 27° / 21° | 81 | 18.5 | 11.8 | 4.9 |
| Jul | 26° / 20° | 52 | 15.6 | 11.8 | 5.5 |
| Aug | 26° / 19° | 30 | 9.3 | 11.9 | 6.4 |
| Sep | 26° / 20° | 33 | 8.2 | 12 | 6.4 |
| Oct | 27° / 20° | 47 | 12.3 | 12.1 | 5.7 |
| Nov | 27° / 20° | 62 | 13.3 | 12.2 | 5.4 |
| Dec | 28° / 21° | 129 | 20.4 | 12.2 | 4.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 0% of the time across winter.
Chance of precipitation in Winter
Arenillas gets around 163 mm of rain over 43 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 6 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 48 min in early June to 11 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.0 kWh/m².
Hazard calendar for Arenillas
None of Arenillas's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Arenillas's monsoon runs January–April, when most of the year's rain falls.
Is winter a good time to visit Arenillas?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Arenillas for sightseeing.
What to pack for Arenillas in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Arenillas sees daytime highs around 26°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 43 days see rain.
Sea temperature near Arenillas in Winter
The nearest coast averages about 24°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 40 km away) is warmest in March at about 27°C and coldest in September near 23°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 26 | 27 | 26 | 26 | 25 | 24 | 23 | 23 | 23 | 24 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 26 | Warm |
| Jun | 25 | Warm |
| Jul | 24 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 23 | Refreshing |
| Nov | 24 | Refreshing |
| Dec | 25 | Warm |
UV index in Arenillas in Winter
Clear-sky midday UV across winter averages 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 Arenillas peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 10 (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) | 14 | 15 | 15 | 12 | 12 | 10 | 10 | 10 | 12 | 13 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Air quality in Arenillas in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Arenillas is worst in December — around 29 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (August, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 14 | 14 | 15 | 15 | 15 | 12 | 9 | 10 | 14 | 27 | 29 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 14 | Moderate |
| Mar | 14 | Moderate |
| Apr | 15 | Moderate |
| May | 15 | Moderate |
| Jun | 15 | Moderate |
| Jul | 12 | Moderate |
| Aug | 9 | Good |
| Sep | 10 | Good |
| Oct | 14 | Moderate |
| Nov | 27 | Moderate |
| Dec | 29 | Moderate |
Where is Arenillas?
Arenillas sits at 3.6°S, 80.1°W, 41 m above sea level, in Ecuador. The nearest listed city is Santa Rosa, 16 km away.
Topography around Arenillas
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arenillas.
Within 3 km, the terrain around Arenillas has only modest variations in elevation — a maximum elevation change of 134 m around an average of 48 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 507 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,874 m.
The land around Arenillas is covered by trees (41%) and grassland (39%) within 3 km, trees (45%) and grassland (34%) within 16 km, and trees (40%), water (28%) and grassland (23%) within 80 km.
Ecuador travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 43% of US
- price level, 2025
- GDP per capita
- $7,125
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 70%
- of population, 2024
- Homicide rate
- 45.7
- per 100k, 2023
- Road deaths
- 20.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 466
- 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 Arenillas (-3.554°, -80.0668°, elevation 41 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.