Seward (AK)
September
Weather in Seward, Alaska for September 2026
Your guide to Seward weather in September - trends and predictions
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So far, September 2026 in Seward is slightly warmer than the historical average by 0.8 °F.
The forecast for the next days in Seward predicts a temperature of 7.1 °F, which is cooler than the historical average.
In general, the average temperature in Seward at the beginning of September is 12.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 7.4 °F by the end of September.
Seward experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 401.4 mm.
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Temperatures
Rain 🌧️
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2
Dry days
28
Rainy days
0
Snow days
10°/6°
Temperatures
13 km/h
Avg max wind
87 %
Avg humidity
Seward Weather September
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Temperatures trend during September in Seward
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September weather in Seward day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate rain at times | 13° /6° | 1.4 mm | 3 | |
| Sept. 2 | Moderate rain at times | 14° /7° | 1.2 mm | 3 | |
| Sept. 3 |  Heavy rain at times | 13° /8° | 3.7 mm | 2 | |
| Sept. 4 | Moderate or heavy rain shower | 12° /7° | 15.1 mm | 3 | |
| Sept. 5 | Moderate or heavy rain shower | 12° /8° | 32 mm | 2 | |
| Sept. 6 | Moderate or heavy rain shower | 11° /9° | 23.1 mm | 2 | |
| Sept. 7 |  Patchy rain possible | 12° /7° | 19.4 mm | 2 | |
| Sept. 8 | Moderate rain at times | 11° /7° | 7.2 mm | 2 | |
| Sept. 9 | Moderate or heavy rain shower | 12° /7° | 14.8 mm | 2 | |
| Sept. 10 | Moderate rain at times | 12° /8° | 16.6 mm | 2 | |
| Sept. 11 | Moderate or heavy rain shower | 12° /8° | 15.6 mm | 2 | |
| Sept. 12 | Heavy rain at times | 12° /7° | 16.6 mm | 2 | |
| Sept. 13 |  Overcast | 13° /6° | 4.2 mm | 2 | |
| Sept. 14 | Moderate or heavy rain shower | 12° /5° | 8.5 mm | 2 | |
| Sept. 15 |  Light rain | 10° /8° | 19.1 mm | 0.3 | |
| Sept. 16 | Overcast | 10° /7° | 0.2 mm | 1.6 | |
| Sept. 17 | Patchy rain possible | 8° /6° | 2.4 mm | 2 | |
| Sept. 18 | Light rain shower | 7° /5° | 11.1 mm | 2 | |
| Sept. 19 | Light rain shower | 6° /4° | 13.4 mm | 2 | |
| Sept. 20 | Light rain shower | 6° /4° | 22 mm | 2 | |
| Sept. 21 | Light rain shower | 5° /3° | 9.7 mm | 1 | |
| Sept. 22 | Patchy rain possible | 7° /2° | 0.9 mm | 2 | |
| Sept. 23 |  Sunny | 7° /3° | 0 mm | 3 | |
| Sept. 24 | Sunny | 6° /2° | 0.1 mm | 3 | |
| Sept. 25 | Light rain shower | 6° /3° | 56.9 mm | 2 | |
| Sept. 26 | Light rain shower | 7° /4° | 79.5 mm | 2 | |
| Sept. 27 | Light rain shower | 7° /6° | 4.9 mm | 2 | |
| Sept. 28 | Moderate rain at times | 7° /1° | 3.1 mm | 2 | |
| Sept. 29 | Light rain | 9° /2° | 4.1 mm | 3 | |
| Sept. 30 |  Cloudy | 10° /1° | 0 mm | 3 | |
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Important Notice
Our weather forecast for Seward in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Seward forecast closer to your planned date for the most up-to-date weather information.
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Seward in September - FAQ
What are the expected maximum and minimum temperatures in Seward during September?
During September, expect a variety of temperatures with highs around 10° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Seward during September?
Significant rainfall exceeding 401.4 mm is expected in Seward during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Seward during September?
The average wind speed in Seward during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Seward
Explore the daily rainfall trends and prepare for Sewards September weather 💧
Typically, Seward has 28 rainy days in September with a total of 401.4 mm of rainfall.
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