Yosemite National Park is definitely worth a visit
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Peru (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Peru.
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Climate overview of Peru
Peru, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to -1°C (30°F).
The city has a wet climate, receiving around 1055 mm (42 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month.
Peru Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Peru - and find the best time to visit.
Monthly Temperature in Peru
Visitors to Peru can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a very cold -1°C (30°F) in January.
Nighttime temperatures range from 18°C (64°F) in July to -10°C (14°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Peru
Peru is known for its substantial rain/snowfall, with annual precipitation reaching 1055 mm (42 in). The seasons in Peru bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 133 mm (5.2 in) of precipitation. This rainfall is distributed across 14 rainy days.
In contrast, the driest month, January, experiences much less snowfall, totaling 44 mm (1.7 in) over 10 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Peru Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Peru
For comfortable weather, consider visiting Peru in September. Conditions are usually least favourable in January, February, March, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
cold
Mar
cold
Apr
mixed
May
very good
Jun
very good
Jul
very good
Aug
very good
Sep
excellent
Oct
very good
Nov
cold
Dec
cold
- Best overall: September
- Warmest weather: June, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Peru
What is the best time to visit Peru?
September typically offers the most optimal weather in Peru. In contrast, January, February, March, November and December tend to have less optimal conditions. Peru has warm summers and very cold winters.
What temperatures can I expect in Peru?
Daytime highs range from -1°C (30°F) in January to 29°C (84°F) in July. Nighttime lows range from -10°C (14°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Peru get?
Annual rainfall is around 1055 mm (42 in). June is the wettest month with 133 mm (5.2 in), while January is the driest with 44 mm (1.7 in).
Peru 3-Day Forecast
Peru on the map
Peru is highlighted - select any city to see its climate.
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Where to go in October - average daytime high across popular destinations.
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