September weather forecastNeah Bay, WA

September

Weather in September

September, the first month of the autumn in Neah Bay, is still a comfortable month, with an average temperature varying between 53.1°F (11.7°C) and 61.7°F (16.5°C).

Temperature

The shift from August to September is characterized by an average high-temperature of a still comfortable 61.7°F (16.5°C), not significantly different from the 63.7°F (17.6°C) of August. Neah Bay reports an average low temperature of 53.1°F (11.7°C) in September, a minor decrease from the day's highs.

Humidity

In Neah Bay, the average relative humidity in September is 83%.

Rainfall

In Neah Bay, during September, the rain falls for 10.1 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Neah Bay, during the entire year, the rain falls for 141.9 days and collects up to 17.17" (436mm) of precipitation.

Snowfall

April through November are months without snowfall.

Ocean temperature

In Neah Bay, in September, the average water temperature is 54.1°F (12.3°C).
Note: With the appropriate swimsuit, one can swim in 54.1°F (12.3°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.

Daylight

In Neah Bay, the average length of the day in September is 12h and 34min.
On the first day of September, sunrise is at 6:37 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:58 pm PDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The months with the highest UV index in Neah Bay are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in September, in Neah Bay, is 61.7°F (16.5°C), while the low-temperature averages to 53.1°F (11.7°C).

In Neah Bay, Washington, the average relative humidity in September is 83%.

In September, in Neah Bay, Washington, the rain falls for 10.1 days. Throughout September, 0.91" (23mm) of precipitation is accumulated.

In Neah Bay, Washington, snow does not fall in April through November.

In Neah Bay, Washington, the average seawater temperature in September is 54.1°F (12.3°C). Swimming in 54.1°F (12.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

The average day length in September in Neah Bay is 12h and 34min.

On the first day of September, sunrise is at 6:37 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:58 pm PDT.

In Neah Bay, Washington, the average sunshine duration in September is 8.6h.

The months with the highest UV index are May through September, with an average maximum UV index of 4.

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

63.7°F

61.7°F

55.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.4mph

6mph

8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

5.1

10.1

13.5

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

23.3

17.7

15.4

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Neah Bay, WA

Average high temperature in September: 61.7°F

The warmest month (with the highest average high temperature) is August (63.7°F).
The months with the lowest average high temperature are February and December (44.8°F).

Average low temperature in September: 53.1°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is February (39.6°F).

Average pressure in September
Neah Bay, WA

Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is July (30.07"Hg).
The months with the lowest atmospheric pressure are March and November (29.98"Hg).

Average wind speed in September
Neah Bay, WA

Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Neah Bay, WA

Average humidity in September: 83%

The months with the highest relative humidity are January and August (84%).
The month with the lowest relative humidity is April (80%).

Average rainfall in September
Neah Bay, WA

Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is January (3.07").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in September
Neah Bay, WA

Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is November (16.4 days).
The month with the least rainy days is August (5.1 days).

Average snowfall in September
Neah Bay, WA

Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Neah Bay, WA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Neah Bay, WA

Average sea temperature in September: 54.1°F

The best month for swimming (with the highest average sea temperature) is July (55.1°F).
The coldest month (with the lowest average sea temperature) is February (46.8°F).

Average daylight in September /
Average sunshine in September
Neah Bay, WA

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

Average sunshine in September: 8h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Neah Bay, WA

Average sunshine days in September: 17.7 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is November (11.2 days).

Average UV index in September
Neah Bay, WA

Average UV index in September: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Neah Bay, WA

Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in September
Neah Bay, WA

Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).