Homer
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Homer, AK

A drone shot of the scenic Homer Spit region in Homer, Alaska, overlooking the calm seawater and distant mountain ranges
A drone shot of the scenic Homer Spit region in Homer, Alaska, overlooking the calm seawater and distant mountain ranges
The first month of the autumn, September, is also a fresh month in Homer, Alaska, with average temperature ranging between max 55°F (12.8°C) and min 41.4°F (5.2°C).

Temperature

In Homer, the average high-temperature in September slightly decreases, from an enjoyable 61°F (16.1°C) in August, to a fresh 55°F (12.8°C). In Homer, the average low-temperature is 41.4°F (5.2°C).

Rainfall

September is the month with the most rainfall. Rain falls for 15.9 days and accumulates 3.3" (84.1mm) of precipitation.

Snowfall

In Homer, in September, it doesn't snow. In October, it regularly snows. Throughout the year, 49.8" (1264.8mm) of snow is accumulated.

Ocean temperature

In Homer, the average seawater temperature is 51.8°F (11°C).
Note: Swimming in 51.8°F (11°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in September is 12.8h.

Sunshine

The average sunshine in September is 5h.

UV index

In Homer, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Homer?

The average high-temperature, in September, in Homer, is 55°F (12.8°C), while the average low-temperature is 41.4°F (5.2°C).

How much does it rain in Homer in September?

In Homer, Alaska, in September, during 15.9 rainfall days, 3.3" (84.1mm) of precipitation is typically accumulated.

What is the rainiest month in Homer?

The month with the most rainfall in Homer, Alaska, is September when the rain falls for 15.9 days and typically aggregates up to 3.3" (84.1mm) of precipitation.

Does it snow in Homer in September?

In Homer, in September, it doesn't snow. In October, it regularly snows.

What is the water temperature in September in Homer?

In Homer, Alaska, the average seawater temperature in September is 51.8°F (11°C). Swimming in 51.8°F (11°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in September in Homer?

The average length of the day in September in Homer, Alaska, is 12.8h.

How long on average sun shines in September in Homer?

In Homer, Alaska, the average sunshine in September is 5h.

What is the UV index intensity in September in Homer?

In September, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Homer, AK
  • Average high temperature in September: 55°F

The warmest month (with the highest average high temperature) is July (61.2°F).
The month with the lowest average high temperature is January (30.8°F).

  • Average low temperature in September: 41.3°F

The month with the highest average low temperature is July (48.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average rainfall in September - Homer, AK
  • Average rainfall in September: 3.3"

The wettest month (with the highest rainfall) is September (3.3").
Driest months (with the lowest rainfall) are May and June (0.8").

Average rainfall days in September - Homer, AK
  • Average rainfall days in September: 15.9 days

The month with the highest number of rainy days is September (15.9 days).
The month with the lowest number of rainy days is May (9.3 days).

Average snowfall in September - Homer, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (11.1").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in September - Homer, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature in September - Homer, AK
  • Average sea temperature in September: 52°F

The best month for swimming (with the highest average sea temperature) is August (54°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

Average daylight in September / Average sunshine in September - Homer, AK
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 18.6h).
The month with shortest days is December (Average daylight: 6.1h).

  • Average sunshine in September: 5h

Months with most sunshine are May and June (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 2h).

Average UV index in September - Homer, AK
  • Average UV index in September: 2

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).