Climate averages 1991–2020

Castro weather
in July.

A mild, moderately wet month: the coolest and the 3rd driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 18.8°C Daytime mean, July
Average low 10.1°C Night-time mean, July
Rainfall 79 mm 7 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Castro · average highYear overview

July is a mild month in Castro: daytime highs average 18.8°C and nights cool to about 10.1°C. By daytime temperature it is the coolest month of the year.

Expect about 79 mm of rain on roughly 7 days, which makes July a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average July day.

The nearest other city in this atlas is Ponta Grossa (37 km away). In July its highs average 18.6°C, about as warm as Castro, with 80 mm of rain.

Among the 448 cities listed in Brazil, Castro ranks 407th of 448 for the warmest July highs and joint 323rd of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Castro is 5.9°C cooler than that mean.

From July to August, average highs rise by 1.9°C to 20.7°C, and monthly rainfall falls from 79 mm to 72 mm.

The annual picture

July in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 51015202530 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Castro climate table

1991–2020
Monthly climate averages for Castro, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 25.3°C17.8°C17.8°C23523.713.513 h
February 25.2°C17.8°C17.8°C18021.112.913 h
March 24.4°C16.9°C16.9°C13318.012.212 h
April 23.0°C14.9°C14.9°C699.611.512 h
May 19.8°C11.9°C11.9°C898.910.911 h
June 18.9°C10.8°C10.8°C938.110.611 h
July, selected 18.8°C10.1°C10.1°C797.010.811 h
August 20.7°C10.8°C10.8°C727.211.311 h
September 22.1°C12.5°C12.5°C12710.411.912 h
October 23.4°C14.4°C14.4°C13815.112.713 h
November 23.9°C15.2°C15.2°C13316.013.313 h
December 25.1°C16.9°C16.9°C17220.213.614 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

July in nearby cities

Distance from Castro

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Castro) is explained once on the Castro year overview and on the Sources, method and limits page.