Bothell, United States — Weather in May 2027

Climate Overview

Bothell, United States in May has mild conditions, with highs averaging 18.2°C (65°F) and noticeably cooler mornings. Rain falls on about 12 days this month.

This month falls at the end of Spring.

Temperatures remain fairly steady throughout May, with daily highs around 18°C (64°F).

May sees fairly even rainfall, totalling about 79 mm across the month.

Expect around 10.4h of sunshine at the start of May, increasing to 11.1h by the end.

The warmest days tend to fall around the 12th, averaging 19.6°C (67°F).

Compared to April, this month is about 4°C warmer with 4 fewer rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

18°C / 9°C

Feels Like

17°C / 7°C

Rain

12 days · 79 mm

Sunshine

11h / day

Humidity

76% — Humid

Wind

14 km/h

Wind Direction

SW (232°)

Gusts

28 km/h

Daylight

15.2 h

Cloud Cover

64%

Clear Sky Days

3.3

UV Index

5.5 — High

Dew Point

10°C — Dry

Moon Phase

Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:32

Daylight 15.1h

Sunset 20:41

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	8°C / 3°C	5°C / -1°C	18days (184 mm) Wet	4.3h Fair	84% Humid	1.2 Low	Wet	View Details
February	8°C / 2°C	5°C / -1°C	17days (147 mm) Wet	5.4h Fair	83% Humid	2 Low	Poor	View Details
March	11°C / 4°C	8°C / 0°C	17days (129 mm) Wet	7.6h Good	81% Humid	3.4 Moderate	Poor	View Details
April	14°C / 6°C	12°C / 3°C	16days (107 mm) Wet	9.4h Good	77% Humid	4.7 Moderate	Fair	View Details
May	18°C / 9°C	17°C / 7°C	12days (79 mm) Wet	11h Excellent	76% Humid	5.5 High	Good	View Details
June best	21°C / 12°C	21°C / 11°C	10days (70 mm) Wet	11.7h Excellent	74% Muggy	6.3 High	Excellent	View Details
July best	25°C / 14°C	25°C / 15°C	5days (21 mm) Good	12.7h Excellent	70% Muggy	6.9 High	Excellent	View Details
August best	25°C / 15°C	26°C / 15°C	5days (31 mm) Good	11.5h Excellent	71% Muggy	5.8 High	Excellent	View Details
September best	21°C / 13°C	21°C / 12°C	9days (73 mm) Wet	9.6h Good	77% Humid	4.6 Moderate	Excellent	View Details
October	15°C / 9°C	14°C / 6°C	16days (151 mm) Wet	7h Good	83% Humid	2.9 Moderate	Fair	View Details
November	10°C / 6°C	8°C / 3°C	19days (189 mm) Wet	4.6h Fair	85% Humid	1.6 Low	Wet	View Details
December	7°C / 3°C	4°C / 0°C	19days (205 mm) Wet	3.5h Poor	85% Humid	1 Low	Wet	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm evening layerUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Bothell?

May is typically good for visiting Bothell, with average highs of 18°C (65°F) and around 12 rainy days. Bothell, United States in May has mild conditions, with highs averaging 18.2°C (65°F) and noticeably cooler mornings. Ra

Does it rain a lot in Bothell in May?

Bothell typically sees around 12 rainy days in May with 79 mm (3.1 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Bothell in May?

Nights in Bothell during May are cool at around 9°C (48°F). Bring a jacket or sweater for evenings.

What should I pack for Bothell in May?

With highs of 18°C (65°F) and lows of 9°C (48°F) in May, we recommend: Warm evening layer, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is May among the best months weather-wise in Bothell?

May is not the most favourable month weather-wise in Bothell. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Bothell in May?

The average UV index in Bothell during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Bothell in May?

Bothell gets approximately 15 hours of daylight per day in May, with around 11 hours of sunshine.

Does it snow in Bothell in May?

Snow is uncommon in Bothell during May based on 10-year climate averages.

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