January Weather in Ilwaco, United States

Last updated: June 24, 2025

In January, the average temperature in Ilwaco, United States is a cool 8°C (47°F). Expect minimums dipping to 0°C (32°F) and maximums reaching 13°C (56°F). Be prepared for 18 days of rainfall, accumulating about 242 mm (9.5 in), and a notable average humidity of 86%.

January Temperature in Ilwaco

In January in Ilwaco, the average temperature is 8°C (47°F). The maximum can reach 13°C (56°F), while the minimum can drop to as low as 0°C (32°F). Travelers should pack layers to stay comfortable in varying weather conditions.

January Weather in Ilwaco: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ilwaco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilwaco, January typically has an average temperature of 8°C (47°F), with highs reaching up to 13°C (56°F) and lows dropping to around 0°C (32°F).

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

January Precipitation in Ilwaco

In Ilwaco in January, the precipitation amount is 242 mm (9.5 in) over a period of 18 days.

January Precipitation Trends in Ilwaco

The chart displays monthly precipitation patterns in Ilwaco, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ilwaco, January typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Ilwaco

In Ilwaco in January, humidity is 86%. With an average temperature of 8°C (47°F), this humidity feels like a chilling damp that penetrates your clothes, making outdoor adventures less enjoyable and encouraging you to seek warmth indoors rather than explore the sights.

January Average Humidity in Ilwaco

This chart illustrates the average monthly humidity levels in Ilwaco, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ilwaco is approximately 86%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Ilwaco

In Ilwaco in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ilwaco, you can visit Hourly UV Index in Ilwaco.

Maximum UV Index Levels in Ilwaco for January

The chart shows the monthly maximum UV Index (UVI) for Ilwaco in January, 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 January, the maximum UV index in Ilwaco typically reaches 2, which falls under the low exposure category.

Data source: Ilwaco January 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 January Weather in Ilwaco Compares to Other Months

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

This table compares monthly weather conditions in Ilwaco, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	242 mm (9.5 inches)	86%	low
February Weather	7°C (45°F)	193 mm (7.6 inches)	84%	moderate
March Weather	8°C (47°F)	161 mm (6.3 inches)	85%	moderate
April Weather	10°C (50°F)	132 mm (5.2 inches)	83%	high
May Weather	12°C (54°F)	66 mm (2.6 inches)	84%	very high
June Weather	14°C (58°F)	58 mm (2.3 inches)	84%	very high
July Weather	15°C (60°F)	19 mm (0.8 inches)	82%	very high
August Weather	16°C (61°F)	20 mm (0.8 inches)	73%	very high
September Weather	15°C (60°F)	84 mm (3.3 inches)	74%	high
October Weather	13°C (55°F)	156 mm (6.1 inches)	83%	moderate
November Weather	10°C (51°F)	249 mm (9.8 inches)	86%	moderate
December Weather	8°C (47°F)	248 mm (9.8 inches)	87%	low