April Weather in Sequim, United States

Last updated: June 24, 2025

In April, the average temperature in Sequim, United States hovers around 7°C (44°F). While you might encounter chilly lows of -3°C (28°F), the mercury can rise to a pleasant 20°C (69°F). Be prepared for 119 mm (4.7 in) of precipitation that graces 18 days of the month, contributing to a notable average humidity of 83%.

April Temperature in Sequim

In April in Sequim, the average temperature is 7°C (44°F). The maximum can reach 20°C (69°F), while the minimum can dip as low as -3°C (28°F). This diverse temperature range makes Sequim a destination to prepare for varying weather conditions during your travels.

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

The chart illustrates April temperature patterns in Sequim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sequim, April typically has an average temperature of 7°C (44°F), with highs reaching up to 20°C (69°F) and lows dropping to around -3°C (28°F).

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

April Precipitation in Sequim

In Sequim in April, the precipitation amount is 119 mm (4.7 in) over the course of 18 days.

April Precipitation Trends in Sequim

The chart displays monthly precipitation patterns in Sequim, 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 Sequim, April typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 18 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 Sequim

In Sequim in April, humidity is 83%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making exploring outdoors somewhat uncomfortable and requiring extra layers to stay warm and dry.

April Average Humidity in Sequim

This chart illustrates the average monthly humidity levels in Sequim, 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 Sequim is approximately 83%, 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 Sequim

In Sequim in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Sequim, you can refer to this Hourly UV Index in Sequim.

Maximum UV Index Levels in Sequim for April

The chart shows the monthly maximum UV Index (UVI) for Sequim 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 Sequim typically reaches 6, which falls under the high exposure category.

Data source: Sequim 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 Sequim Compares to Other Months

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

This table compares monthly weather conditions in Sequim, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	182 mm (7.2 inches)	86%	low
February Weather	2°C (36°F)	150 mm (5.9 inches)	84%	moderate
March Weather	4°C (40°F)	128 mm (5.1 inches)	85%	moderate
April Weather	7°C (44°F)	119 mm (4.7 inches)	83%	high
May Weather	11°C (51°F)	93 mm (3.7 inches)	84%	very high
June Weather	13°C (56°F)	118 mm (4.6 inches)	84%	very high
July Weather	15°C (60°F)	49 mm (1.9 inches)	82%	very high
August Weather	16°C (61°F)	45 mm (1.8 inches)	73%	very high
September Weather	13°C (56°F)	122 mm (4.8 inches)	74%	high
October Weather	9°C (48°F)	143 mm (5.6 inches)	83%	moderate
November Weather	6°C (42°F)	199 mm (7.8 inches)	86%	moderate
December Weather	3°C (38°F)	193 mm (7.6 inches)	87%	low