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July Weather in Portland, United Kingdom

Last updated: August 27, 2025

In July, the average temperature in Portland, United Kingdom is a comfortable 17°C (62°F). Expect a minimum of 12°C (54°F) and a maximum of 22°C (72°F), making it a pleasant time to visit. However, be prepared for approximately 50 mm (2.0 in) of precipitation over 8 days, contributing to an average humidity of 70%. Enjoy the mild climate while staying prepared for occasional showers!

July Temperature in Portland

In July in Portland, the average temperature is 17°C (62°F). The maximum can reach 22°C (72°F), while the minimum can drop to as low as 12°C (54°F). This pleasant climate makes Portland an ideal destination for travelers seeking mild weather.

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

The chart illustrates July 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, July typically has an average temperature of 17°C (62°F), with highs reaching up to 22°C (72°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec464647495358626261575148
Data source: Temperature data for Portland generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Portland

In Portland in July, the total precipitation amount is 50 mm (2.0 in) spread over 8 days.

July Precipitation Trends in Portland

The chart displays monthly precipitation patterns in Portland, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Portland, July typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec758382416874507758144108136
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Portland

In Portland in July humidity is 70%. With an average temperature of 17°C (62°F), this humidity feels like a comfortable balance, creating a refreshing atmosphere for traveling, where the warmth is pleasantly offset by the moist air, making it ideal for leisurely strolls and exploration.

July Average Humidity in Portland

This chart illustrates the average monthly humidity levels in Portland, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Portland is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Portland

In Portland in July, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Portland.

Maximum UV Index Levels in Portland for July

The chart shows the monthly maximum UV Index (UVI) for Portland in July, 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 July, the maximum UV index in Portland typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679876421
Data source: Portland July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)74 mm (2.9 inches)88%low
February Weather8°C (46°F)83 mm (3.3 inches)88%moderate
March Weather8°C (47°F)82 mm (3.2 inches)86%moderate
April Weather9°C (49°F)41 mm (1.6 inches)84%high
May Weather12°C (54°F)68 mm (2.7 inches)80%high
June Weather15°C (59°F)74 mm (2.9 inches)80%very high
July Weather17°C (62°F)50 mm (2.0 inches)70%very high
August Weather17°C (63°F)77 mm (3.0 inches)73%high
September Weather16°C (61°F)58 mm (2.3 inches)79%high
October Weather14°C (57°F)144 mm (5.7 inches)89%moderate
November Weather11°C (51°F)107 mm (4.2 inches)90%low
December Weather9°C (49°F)136 mm (5.4 inches)89%low

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