Portobello Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Portobello, Otago, New Zealand. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

On average, Portobello receives a reasonable amount of rainfall, with an annual precipitation of 844 mm (33 in).

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Portobello offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between January (93 mm (3.7 in)) and July (51 mm (2 in)) is not too significant, making the climate enjoyable for visitors and residents alike.

January, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 174 hours of sunshine in this period. During the driest month July you can expect a temperature of 11°C (52°F). For more detailed insights into the city's temperatures, visit our Portobello Temperature page.

Portobello's average annual precipitation is 844 mm (33 in). Let's compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Portobello's weather, including sunshine hours, humidity levels, and temperature data, visit our Portobello Climate page.