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April Weather in Porsgrunn, Norway

Last updated: August 27, 2025

In April, the average temperature in Porsgrunn, Norway is a cool 5°C (42°F). Expect a chilly minimum of -11°C (13°F), while the mercury can rise to a comforting 21°C (70°F) during warmer days. With 39 mm (1.5 in) of precipitation over about 6 days, don't forget your umbrella! The air will be quite humid as well, with an average humidity of 83%.

April Temperature in Porsgrunn

In April in Porsgrunn, the average temperature is 5°C (42°F). The maximum can reach 21°C (70°F) and the minimum can be as low as -11°C (13°F). Pack accordingly to experience a range of weather from chilly to mild during your travels.

April Weather in Porsgrunn: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Porsgrunn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porsgrunn, April typically has an average temperature of 5°C (42°F), with highs reaching up to 21°C (70°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec303034415160636054453731
Data source: Temperature data for Porsgrunn 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.

April Precipitation in Porsgrunn

In Porsgrunn in April, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.

April Precipitation Trends in Porsgrunn

The chart displays monthly precipitation patterns in Porsgrunn, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Porsgrunn, April typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec76797939869410494126137116130
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Porsgrunn

In Porsgrunn in April, humidity is 83%. With an average temperature of 5°C (42°F), this humidity feels like a heavy blanket wrapping around you, making even the simplest outdoor activities feel exhausting and uncomfortable for traveling.

April Average Humidity in Porsgrunn

This chart illustrates the average monthly humidity levels in Porsgrunn, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Porsgrunn is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%83%75%74%74%78%86%92%92%92%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Porsgrunn

In Porsgrunn in April, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Porsgrunn for better planning.

Maximum UV Index Levels in Porsgrunn for April

The chart shows the monthly maximum UV Index (UVI) for Porsgrunn in April, 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 April, the maximum UV index in Porsgrunn typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Porsgrunn April 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 April Weather in Porsgrunn Compares to Other Months

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

This table compares monthly weather conditions in Porsgrunn, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)76 mm (3.0 inches)93%low
February Weather-1°C (30°F)79 mm (3.1 inches)91%low
March Weather1°C (35°F)79 mm (3.1 inches)88%moderate
April Weather5°C (42°F)39 mm (1.5 inches)83%moderate
May Weather10°C (51°F)86 mm (3.4 inches)75%moderate
June Weather16°C (60°F)94 mm (3.7 inches)74%high
July Weather17°C (63°F)104 mm (4.1 inches)74%high
August Weather16°C (60°F)94 mm (3.7 inches)78%moderate
September Weather12°C (54°F)126 mm (5.0 inches)86%moderate
October Weather7°C (46°F)137 mm (5.4 inches)92%low
November Weather3°C (38°F)116 mm (4.6 inches)92%low
December Weather-1°C (31°F)130 mm (5.1 inches)92%low

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