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June Weather in Portland, United Kingdom

Last updated: August 27, 2025

In June, the average temperature in Portland, United Kingdom hovers around 15°C (59°F). Expect minimums of 10°C (50°F) and maximums reaching 20°C (69°F). During this month, you can anticipate around 74 mm (2.9 in) of precipitation over 10 days, contributing to an average humidity of 80%. Stay prepared for a pleasantly mild atmosphere!

June Temperature in Portland

In June in Portland, the average temperature is 15°C (59°F), with maximums reaching 20°C (69°F) and minimums dropping to as low as 10°C (50°F). This mild weather makes it an ideal time for travelers to explore the sights and enjoy outdoor activities.

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

The chart illustrates June 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, June typically has an average temperature of 15°C (59°F), with highs reaching up to 20°C (69°F) and lows dropping to around 10°C (50°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.

June Precipitation in Portland

In Portland in June, the precipitation amount is 74 mm (2.9 in) spread over a period of 10 days.

June Precipitation Trends in Portland

The chart displays monthly precipitation patterns in Portland, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Portland, June typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec758382416874507758144108136
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Portland

In Portland in June, humidity is 80%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly uncomfortable and necessitating frequent breaks to stay hydrated.

June Average Humidity in Portland

This chart illustrates the average monthly humidity levels in Portland, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Portland is approximately 80%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Portland

In Portland in June, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Portland.

Maximum UV Index Levels in Portland for June

The chart shows the monthly maximum UV Index (UVI) for Portland in June, 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 June, the maximum UV index in Portland typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679876421
Data source: Portland June 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 June 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 June’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 June’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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