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Ilo in May 2027: weather, temperatures and activities

Do you want to visit Ilo in May 2027? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether May is a good month to travel to Ilo, Peru.

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Is it worth visiting Ilo in May?

Check your ideal travel criteria and see if the month of May suits your plans to go to Ilo.
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Ilo in May 2027: weather, temperatures and activities

Page summary

Ilo in May in summary
Ideal weather
Min 19°C Max 20°C 1 mm 0 day(s) 83% 15% 21°C UV 5 9.3 h/day
Best activities in May
Cultural visits and heritageNature and landscapes
Practical guidelines
Moderate crowds 06:03 17:20
Hourly weather

Average weather in Ilo in May 2027

Ideal weather

The weather in Ilo in May 2027 is based on statistical data from previous years in May. This allows you to forecast the weather in May 2027. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

From 1st to 31 May 2027
0h
Dominant weather
Clear/Sunny
18 days out of 31 (58%)
18.8°C
Other common conditions
Partly Cloudy
11 days out of 31 (35%)
Cloudy
2 days out of 31 (6%)
Heavy rain
1 days out of 31 (3%)
3h
Dominant weather
Clear/Sunny
18 days out of 31 (58%)
18.8°C
Other common conditions
Partly Cloudy
12 days out of 31 (38%)
Cloudy
1 days out of 31 (3%)
Moderate rain at times
1 days out of 31 (3%)
6h
Dominant weather
Clear/Sunny
20 days out of 31 (64%)
19.2°C
Other common conditions
Partly Cloudy
9 days out of 31 (29%)
Cloudy
1 days out of 31 (3%)
Moderate rain at times
1 days out of 31 (3%)
9h
Dominant weather
Clear/Sunny
25 days out of 31 (80%)
19.7°C
Other common conditions
Partly Cloudy
5 days out of 31 (16%)
Moderate rain at times
1 days out of 31 (3%)
Cloudy
1 days out of 31 (3%)
12h
Dominant weather
Clear/Sunny
27 days out of 31 (87%)
19.9°C
Other common conditions
Partly Cloudy
3 days out of 31 (9%)
Moderate rain at times
1 days out of 31 (3%)
Heavy rain
1 days out of 31 (3%)
15h
Dominant weather
Clear/Sunny
25 days out of 31 (80%)
19.1°C
Other common conditions
Partly Cloudy
6 days out of 31 (19%)
Moderate rain at times
1 days out of 31 (3%)
18h
Dominant weather
Clear/Sunny
19 days out of 31 (61%)
17.9°C
Other common conditions
Partly Cloudy
12 days out of 31 (38%)
Cloudy
1 days out of 31 (3%)
Heavy rain
1 days out of 31 (3%)
21h
Dominant weather
Clear/Sunny
19 days out of 31 (61%)
18.6°C
Other common conditions
Partly Cloudy
11 days out of 31 (35%)
Cloudy
1 days out of 31 (3%)
Moderate rain at times
1 days out of 31 (3%)
Climate

Climate of Ilo in May

Temperatures, precipitation and monthly trends help to better understand the climate in Ilo in May.

Temperatures and rain in Ilo in May

Average daily weather

Temperatures and rain day by day in May.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of May is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Ilo in May

The climate of Ilo in May is dry. It hardly ever rains during this period.

Temperatures are warm in Ilo in May. The average maximum temperature reaches 20°C, while the minimum falls to about 19°C. The month's average temperature is 19°C. These normals should be compared with the records recorded in Ilo in May: 24°C as a maximum in 2009 and 11°C as a minimum in 2020.

In May, the days last on average 11:17 in Ilo. The sun rises around 06:03 and sets around 17:20.

With ideal weather, the month of May is a recommended month to travel to Ilo in Peru.

In May, the most favorable activities in Ilo are: Cultural visits and heritage and Nature and landscapes.

Some activities remain possible even if conditions are not optimal: Beach and swimming.

Seasonal normals

Seasonal normals of Ilo in May

Check the seasonal normals in Ilo in May and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
May
Weather data April May June
Outside temperature
Average temperature 20.7°C 19.4°C 18.0°C
Maximum temperature 21.5°C 20.3°C 18.9°C
Minimum temperature 19.9°C 18.5°C 17.0°C
Record maximum temperature 25.0°C
(2009)
 24.0°C
(2009)
 24.0°C
(2009)
Record low temperature 12.0°C
(2021)
 11.0°C
(2020)
 10.0°C
(2020)
Number of days at +30° 0 day(s)
(0%)
 0 day(s)
(0%)
 0 day(s)
(0%)
Number of days at +18° 30 day(s)
(100%)
 30 day(s)
(97%)
 25 day(s)
(83%)
Number of days below 0° 0 day(s)
(0%)
 0 day(s)
(0%)
 0 day(s)
(0%)
Sea temperature
Sea temperature (average) 20.3°C 19.2°C 18.2°C
Sea temperature (minimum) 17.7°C 17.1°C 16.8°C
Sea temperature (maximum) 23.2°C 21.3°C 19.6°C
Wind
Wind speed 17 km/h 16 km/h 15 km/h
Wind temperature 20.0°C 18.6°C 17.0°C
Precipitation (rain)
Precipitation 3.1 mm 0.9 mm 0.9 mm
Number of days with precipitation 1 day(s)
(3%)
 1 day(s)
(3%)
 0 day(s)
(0%)
Number of days with significant precipitation (greater than 5 mm) 0 day(s)
(1%)
 0 day(s)
(0%)
 0 day(s)
(0%)
Record precipitation in one day 12.2 mm
(2014)
 1.1 mm
(2013)
 0.7 mm
(2014)
Other weather data
Humidity 84% 83% 83%
Visibility 10.0 km 10.0 km 10.0 km
Cloud cover 24% 15% 13%
UV index 5 5 5
Daily sunshine 11h 9h 9h
Sunrise and sunset
Sunrise time 05h55 06h03 06h13
Sunset time 17h36 17h20 17h19
Day length 11h41 11h17 11h06
Our opinion on the climate in May
The review of Where And When ideal weather ideal weather favourable weather
Activities and events

What to do in Ilo in May?

Best activities in May
Cultural visits and heritageNature and landscapes
Possible activities in May
Beach and swimming
Observed weather

What was the weather like in Ilo in May last?

Find the observed weather calendar in Ilo in May 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Clear/Sunny
18°C21°C0.0 mm
2
Clear/Sunny
18°C20°C0.0 mm
3
Clear/Sunny
18°C20°C0.0 mm
4
Clear/Sunny
18°C21°C0.0 mm
5
Clear/Sunny
17°C19°C0.0 mm
6
Clear/Sunny
17°C19°C0.0 mm
7
Clear/Sunny
16°C19°C0.0 mm
8
Clear/Sunny
18°C20°C0.0 mm
9
Clear/Sunny
17°C20°C0.0 mm
10
Clear/Sunny
16°C19°C0.0 mm
11
Clear/Sunny
17°C20°C0.0 mm
12
Clear/Sunny
18°C20°C0.0 mm
13
Clear/Sunny
17°C18°C0.0 mm
14
Overcast
17°C18°C0.0 mm
15
Clear/Sunny
17°C18°C0.0 mm
16
Clear/Sunny
17°C20°C0.0 mm
17
Clear/Sunny
17°C19°C0.0 mm
18
Clear/Sunny
17°C20°C0.0 mm
19
Clear/Sunny
17°C20°C0.0 mm
20
Clear/Sunny
17°C19°C0.0 mm
21
Clear/Sunny
17°C19°C0.0 mm
22
Clear/Sunny
17°C19°C0.0 mm
23
Clear/Sunny
17°C18°C0.0 mm
24
Clear/Sunny
17°C20°C0.0 mm
25
Partly Cloudy
17°C19°C0.0 mm
26
Clear/Sunny
16°C17°C0.0 mm
27
Clear/Sunny
16°C19°C0.0 mm
28
Clear/Sunny
16°C18°C0.0 mm
29
Clear/Sunny
16°C19°C0.0 mm
30
Clear/Sunny
16°C19°C0.0 mm
31
Clear/Sunny
16°C18°C0.0 mm
Nearby

Where to go near Ilo in May?

Compare cities and destinations near Ilo in May to find another travel stop, a nearby alternative or a logical continuation of your stay in Ilo.

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Best times to visit Ilo All cities in Peru in May
Every month

Best time to visit Ilo month by month

Compare the weather in Ilo across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Ilo in May: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Yes, this is one of the best times. The weather conditions are ideal in Ilo in May, which places this month 5th out of 12. Expect, however, more crowds and higher prices.

Expect an average of 20°C during the day and 19°C at night, with about 1 mm of precipitation spread over 0 rainy days.

The sea is only 19°C on average in May. Swimming is still possible, but it will be cool.

Expect about 9.3 hours of sunshine per day on average for this month.

This month is particularly suited to these activities: Cultural visits and heritage and Nature and landscapes. These are the ones for which the conditions on site are most favourable.

Visitor numbers are moderate: this month is in Moderate crowds, with an index of 44/100. It is often a good compromise between weather and tranquility.
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Temperatures are shown in degrees Celsius and precipitation in millimetres. Based on your country of connection, °F and inches may be more familiar to you.