Climate Insights for Waterloo

The climate in Waterloo is hot. The average annual temperature is 26°C and approximately 1,055 mm of precipitation falls per year. Waterloo receives a notable amount of rainfall throughout the year, including during its driest month. Waterloo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 22°C.The climate in Waterloo is hot. The average annual temperature is 79°F and approximately 41.5 in of precipitation falls per year. Waterloo receives a notable amount of rainfall throughout the year, including during its driest month. Waterloo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 71°F.

Waterloo has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 22°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.Waterloo has relatively stable temperatures year-round, staying within a 18°F range. The warmest month is August, when average highs reach 89°F and the mean temperature sits around 82°F. January is the coolest month, with minimum temperatures around 71°F and an average of 76°F. Daily temperature variation is modest, with an average difference of 11°F between highs and lows.

Waterloo is a moderately rainy area, receiving approximately 1,055 mm of precipitation annually, which averages out to around 88 mm per month. The wettest month is October, averaging 198 mm of rainfall. November and September also tend to see above-average precipitation. The driest month is February, with just 39 mm. That's 160 mm less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Waterloo is a moderately rainy area, receiving approximately 41.5 in of precipitation annually, which averages out to around 3.5 in per month. The wettest month is October, averaging 7.8 in of rainfall. November and September also tend to see above-average precipitation. The driest month is February, with just 1.5 in. That's 6.3 in less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Waterloo is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.Waterloo is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is June, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2mph gap between the calmest and windiest months.

The best time to visit Waterloo is during January, February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 47 mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 32°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Waterloo is during January, February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 76°F with modest rainfall averaging 1.9 in per month. By contrast, August can be uncomfortably hot with temperatures reaching 89°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Waterloo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Waterloo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.