April Weather in Altona, Canada

Last updated: June 18, 2025

In April, the average temperature in Altona, Canada hovers around 3°C (37°F). While you'll experience days as chilly as -19°C (-2°F), be prepared for the occasional warm surprise reaching up to 24°C (76°F). Expect about 25 mm (1.0 in) of rainfall spread over 5 days, and enjoy the typically high humidity levels of 81% that lend an ambiance to this season.

April Temperature in Altona

In April in Altona, the average temperature is 3°C (37°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as -19°C (-2°F). Be prepared for a wide range of temperatures when traveling, and pack accordingly!

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

The chart illustrates April temperature patterns in Altona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altona, April typically has an average temperature of 3°C (37°F), with highs reaching up to 24°C (76°F) and lows dropping to around -19°C (-2°F).

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

April Precipitation in Altona

In Altona in April, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

April Precipitation Trends in Altona

The chart displays monthly precipitation patterns in Altona, 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 Altona, April typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Altona

In Altona in April, humidity is 81%. With an average temperature of 3°C (37°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and only for the most adventurous.

April Average Humidity in Altona

This chart illustrates the average monthly humidity levels in Altona, 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 Altona is approximately 81%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Altona

In Altona in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Altona.

Maximum UV Index Levels in Altona for April

The chart shows the monthly maximum UV Index (UVI) for Altona 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 Altona typically reaches 7, which falls under the high exposure category.

Data source: Altona 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 Altona Compares to Other Months

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

This table compares monthly weather conditions in Altona, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (9°F)	16 mm (0.6 inches)	92%	low
February Weather	-15°C (6°F)	17 mm (0.7 inches)	90%	moderate
March Weather	-5°C (24°F)	19 mm (0.7 inches)	88%	moderate
April Weather	3°C (37°F)	25 mm (1.0 inches)	81%	high
May Weather	13°C (55°F)	46 mm (1.8 inches)	74%	very high
June Weather	20°C (67°F)	73 mm (2.9 inches)	72%	very high
July Weather	22°C (71°F)	59 mm (2.3 inches)	74%	very high
August Weather	20°C (68°F)	58 mm (2.3 inches)	76%	very high
September Weather	14°C (58°F)	78 mm (3.1 inches)	73%	high
October Weather	6°C (43°F)	72 mm (2.8 inches)	76%	moderate
November Weather	-4°C (25°F)	27 mm (1.1 inches)	86%	low
December Weather	-9°C (16°F)	27 mm (1.1 inches)	91%	low