March Weather in Portland, Australia

Last updated: August 22, 2025

In March, the average temperature in Portland, Australia hovers around 17°C (63°F), with minimums sinking to 9°C (49°F) and maximums soaring up to 35°C (94°F). Expect 35 mm (1.4 in) of precipitation spread over about 8 days, coupled with an average humidity of 76%. Whether you're soaking in the sun or seeking shelter from showers, prepare for a month of diverse weather!

March Temperature in Portland

In March in Portland, the average temperature is 17°C (63°F). Maximum can reach 35°C (94°F), and the minimum can be as low as 9°C (49°F). This variation makes it an ideal time for travelers to experience a pleasant climate, perfect for exploring the outdoors.

March Weather in Portland: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Portland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portland, March typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (94°F) and lows dropping to around 9°C (49°F).

Data source: Temperature data for Portland generated using information from the Copernicus Climate Change Service.

March Precipitation in Portland

In Portland in March, the precipitation amount is 35 mm (1.4 in) over the course of 8 days.

March Precipitation Trends in Portland

The chart displays monthly precipitation patterns in Portland, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Portland, March typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in Portland

In Portland in March humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

March Average Humidity in Portland

This chart illustrates the average monthly humidity levels in Portland, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Portland is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Portland

In Portland in March, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Portland.

Maximum UV Index Levels in Portland for March

The chart shows the monthly maximum UV Index (UVI) for Portland in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Portland typically reaches 10, which falls under the very high exposure category.

Data source: Portland March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How March Weather in Portland Compares to Other Months

Weather in Portland varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Portland, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Portland, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	32 mm (1.3 inches)	76%	extreme
February Weather	17°C (63°F)	31 mm (1.2 inches)	75%	extreme
March Weather	17°C (63°F)	35 mm (1.4 inches)	76%	very high
April Weather	15°C (60°F)	51 mm (2.0 inches)	76%	high
May Weather	13°C (56°F)	92 mm (3.6 inches)	79%	moderate
June Weather	11°C (53°F)	81 mm (3.2 inches)	78%	moderate
July Weather	11°C (52°F)	122 mm (4.8 inches)	78%	moderate
August Weather	11°C (52°F)	113 mm (4.4 inches)	77%	moderate
September Weather	12°C (54°F)	86 mm (3.4 inches)	76%	high
October Weather	13°C (56°F)	74 mm (2.9 inches)	76%	very high
November Weather	15°C (59°F)	68 mm (2.7 inches)	76%	extreme
December Weather	16°C (61°F)	44 mm (1.7 inches)	76%	extreme