Ilo, Peru experiences average highs of 22°C (72°F) and lows of 17°C (63°F) throughout the year. The climate is relatively dry, with only 0 rainy days per month on average. Sunshine is abundant, averaging about 11 hours per day. Average highs have stayed broadly stable across the available records.
Ilo, Peru Weather & Climate 2026
Monthly climate averages for Ilo, Peru. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Mar–Dec 
Wetter season: Jan–Feb At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
9/10
Best: April, May, June, October, November
UV Index
8
High
Temperature 22°C / 17°C
Feels Like 24°C / 18°C
Rainy Days 0
Rainfall 2 mm
Sunshine 11 h
Humidity 84%
Wind Speed 15 km/h
Dew Point 17°C
Hottest Month
26°C
February
Avg Low 22°C
Rain 1 days
Coldest Month
15°C
August
Avg High 20°C
Rain 0 days
Driest Month
0 days
March
Avg High 26°C
Avg Low 21°C
Windiest Month
16 km/h
September (Gusts 28)
Sea Temperature
17°C – 23°C
Warmest water: February (
22.5°C
)
Worst Time to Visit
Consider avoiding January, February, July, September due to less favorable weather conditions.
Sun Position
Sunrise 06:16
Daylight 11.2h
Sunset 17:27
Live conditions —
Ilo on the map · live conditions
Ilo, Peru
- Continent
- Americas
- Country
- Peru
- City
- Ilo
- Population
- 53.5K
- Coordinates
- -17.63°, -71.34°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 21°C
Avg Low 16°C
Rain 0 days/mo
2/3 best months
Summer
Dec–Feb
Avg High 25°C
Avg Low 20°C
Rain 1 days/mo
Autumn
Mar–May
Avg High 24°C
Avg Low 19°C
Rain 0 days/mo
2/3 best months
Winter
Jun–Aug
Avg High 20°C
Avg Low 15°C
Rain 0 days/mo
1/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 25°C / 21°C . Feb: 26°C / 22°C . Mar: 26°C / 21°C . Apr: 24°C / 18°C . May: 22°C / 17°C . Jun: 21°C / 16°C . Jul: 20°C / 15°C . Aug: 20°C / 15°C . Sep: 20°C / 15°C . Oct: 21°C / 16°C . Nov: 22°C / 17°C . Dec: 24°C / 19°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 5 mm. Feb: 5 mm. Mar: 1 mm. Apr: 0 mm. May: 0 mm. Jun: 1 mm. Jul: 1 mm. Aug: 1 mm. Sep: 1 mm. Oct: 0 mm. Nov: 1 mm. Dec: 2 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 83%. Feb: 82%. Mar: 82%. Apr: 83%. May: 85%. Jun: 86%. Jul: 85%. Aug: 84%. Sep: 83%. Oct: 83%. Nov: 83%. Dec: 83%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 15 km/h . Mar: 15 km/h . Apr: 15 km/h . May: 15 km/h . Jun: 15 km/h . Jul: 15 km/h . Aug: 16 km/h . Sep: 16 km/h . Oct: 16 km/h . Nov: 15 km/h . Dec: 15 km/h .
Sunshine
Sunshine
Sunshine: Jan: 11h. Feb: 11h. Mar: 11h. Apr: 11h. May: 10h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 11h. Oct: 11h. Nov: 12h. Dec: 12h.
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 21°C . Feb: 23°C . Mar: 22°C . Apr: 21°C . May: 19°C . Jun: 18°C . Jul: 17°C . Aug: 17°C . Sep: 17°C . Oct: 18°C . Nov: 19°C . Dec: 20°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 10. Feb: UV 10. Mar: UV 9. Apr: UV 8. May: UV 7. Jun: UV 6. Jul: UV 7. Aug: UV 8. Sep: UV 9. Oct: UV 10. Nov: UV 10. Dec: UV 10.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Feb 2025 · 27°C | Feb · 26°C |
| Coldest month | Aug 2025 · 14°C | Aug · 15°C |
| Wettest month | Jan 2025 · 5 mm | Jan · 5 mm |
| Windiest month | Oct 2025 · 15 km/h | Sep · 16 km/h |
Month-by-Month Weather Table
January
Good 
February
Good March
Excellent April best
Excellent May best
Excellent June best
Excellent July
Excellent August
Excellent September
Excellent October best
Excellent November best
Excellent December
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 25°C / 21°C | 29°C / 23°C | 1days (5 mm) Excellent | 11.4h Excellent | 83% Humid | 9.7 Very High | Good | View Details |
| February | 26°C / 22°C | 30°C / 24°C | 1days (5 mm) Excellent | 11.3h Excellent | 82% Humid | 9.5 Very High | Good | View Details |
| March | 26°C / 21°C | 29°C / 23°C | 0days (1 mm) Excellent | 11.2h Excellent | 82% Humid | 9.1 Very High | Excellent | View Details |
| April best | 24°C / 18°C | 26°C / 20°C | 0days (0 mm) Excellent | 10.7h Excellent | 83% Humid | 8.1 Very High | Excellent | View Details |
| May best | 22°C / 17°C | 23°C / 17°C | 0days (0 mm) Excellent | 10.3h Excellent | 85% Humid | 6.9 High | Excellent | View Details |
| June best | 21°C / 16°C | 21°C / 16°C | 0days (1 mm) Excellent | 9.8h Good | 86% Very Muggy | 6.3 High | Excellent | View Details |
| July | 20°C / 15°C | 20°C / 15°C | 0days (1 mm) Excellent | 9.8h Good | 85% Humid | 6.6 High | Excellent | View Details |
| August | 20°C / 15°C | 20°C / 14°C | 0days (1 mm) Excellent | 10.2h Excellent | 84% Humid | 7.6 Very High | Excellent | View Details |
| September | 20°C / 15°C | 21°C / 15°C | 0days (1 mm) Excellent | 10.8h Excellent | 83% Humid | 8.9 Very High | Excellent | View Details |
| October best | 21°C / 16°C | 23°C / 16°C | 0days (0 mm) Excellent | 11.3h Excellent | 83% Humid | 9.5 Very High | Excellent | View Details |
| November best | 22°C / 17°C | 25°C / 18°C | 0days (1 mm) Excellent | 11.8h Excellent | 83% Humid | 9.8 Very High | Excellent | View Details |
| December | 24°C / 19°C | 27°C / 20°C | 0days (2 mm) Excellent | 11.7h Excellent | 83% Humid | 9.9 Very High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Ilo are April, May, June, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Ilo, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Ilo is February, with average daytime highs of 26°C (79°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Ilo is August, with average overnight lows of 15°C (58°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Ilo is January, averaging 5mm of precipitation across 1 rainy days. An umbrella or waterproof jacket is essential.
Ilo receives approximately 130 sunshine hours per year. The sunniest month is November with around 12 hours. Based on climate data for Ilo.
The least favorable months to visit Ilo are January, February, July, September, primarily due to less favorable weather conditions. For the best conditions, consider April, May, June, October, November instead.
The annual average UV index in Ilo is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Ilo is 84%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes — sea temperatures in February, March average 22°C (72°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Ilo are 15 km/h (9 mph). The windiest month is September with peak winds reaching 16 km/h (10 mph) (gusts up to 28 km/h / 17 mph).
Ilo averages 2 clear-sky days per month with overall cloud cover around 59%. The clearest skies occur in April.
The annual average dew point in Ilo is 17°C (63°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Ilo has a Hot Desert climate, classified as BWh under the Köppen system. Arid climates have very low rainfall relative to temperature, with large swings between daytime heat and cool nights.
The 'feels like' temperature in Ilo ranges from 18°C (64°F) to 24°C (75°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, July is a great time to visit Ilo. It earns a climate score of 8.8/10 with Excellent.
For July in Ilo, pack Comfortable walking shoes. With average highs of 20°C (68°F) and 0 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: