September weather forecast
Solomons, MD

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Weather in September

September in Solomons sees a decline in temperature and rainfall, heralding the onset of fall. The decrease in the sea temperature to an average of 74.5°F (23.6°C) is an indicator of the progressive cooling overall. Moving into October, further droplets in temperature, daylight hours, and increasingly variable weather mark the full onset of fall. As such, September stands as a transition period, acting as a gradual march towards the more chilly weather of October and November.

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from 83.1°F (28.4°C) in August to a still warm 77.2°F (25.1°C). The average nighttime temperature in Solomons lowers to an enjoyable 65.8°F (18.8°C) throughout September.

Humidity

The average relative humidity in September in Solomons is 76%.

Rainfall

In Solomons, in September, it is raining for 14.1 days, with typically 2.76" (70mm) of accumulated precipitation. In Solomons, during the entire year, the rain falls for 160.6 days and collects up to 34.49" (876mm) of precipitation.

Snowfall

In Solomons, snow does not fall in May through October.

Ocean temperature

In Solomons, the average seawater temperature in September is 74.7°F (23.7°C).
Note: Taking into account a person's sensitivity to the cold, given sunshine, wind, and air temperature, swimming in 74.7°F (23.7°C) might be pleasant. (FYI: The water temperature set for the Olympic swimming event is between 77°F (25°C) and 82.4°F (28°C).)

Daylight

The average length of the day in September in Solomons is 12h and 25min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of September, in Solomons, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

Sunshine

In September, the average sunshine in Solomons is 9.1h.

UV index

In Solomons, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice! The Sun's UV exposure elevates with sand and water reflections.
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Frequently asked questions

What are the temperatures in Solomons in September?

An average high-temperature, in September, in Solomons, is 77.2°F (25.1°C) and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is evaluated at 89.6°F (32°C).

What is the average humidity in September in Solomons?

The average relative humidity in September is 76%.

How much does it rain in Solomons in September?

In Solomons, Maryland, in September, during 14.1 rainfall days, 2.76" (70mm) of precipitation is typically accumulated.

When it does not snow in Solomons?

In Solomons, snow does not fall in May through October.

What is the water temperature in September in Solomons?

In September, the average ocean temperature is 74.7°F (23.7°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.7°F (23.7°C) water.

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

In September, the average day length in Solomons is 12h and 25min.

When are sunrise and sunset in September in Solomons?

On the first day of September in Solomons, Maryland, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

How long on average sun shines in September in Solomons?

In September, the average sunshine duration is 9.1h.

What is the UV index intensity in September in Solomons?

In September, the average daily maximum UV index in Solomons, Maryland, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
83.1°F 28.4°C
77.2°F 25.1°C
66.7°F 19.3°C
Average low temperature
71.2°F 21.8°C
65.8°F 18.8°C
55.4°F 13°C
Average pressure
29.99" 762mmHg
30.04" 763mmHg
30.03" 763mmHg
Average wind speed
6.8mph 10.9km/h
8mph 12.9km/h
9mph 14.5km/h
Average max. wind speed
7.3mph 11.7km/h
8.3mph 13.4km/h
9.7mph 15.6km/h
Average wind speed gusts
11.1mph 17.9km/h
12.7mph 20.4km/h
14.7mph 23.7km/h
Average humidity
75%
76%
76%
Average rainfall
4.45" 113mm
2.76" 70mm
2.83" 72mm
Average rainfall days
17.6
14.1
11.7
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
78.5°F 25.8°C
74.5°F 23.6°C
67.6°F 19.8°C
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 2min
9h 1min
5h 4min
Average sunshine days
10.7
14.3
17.6
Average UV index
6
5
4
Average cloud cover
30%
35%
36%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in September
Solomons, MD

Average temperature in September - Solomons, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in September
Solomons, MD

Average pressure in September - Solomons, MD
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in September
Solomons, MD

Average wind speed in September - Solomons, MD
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in September
Solomons, MD

Average humidity in September - Solomons, MD
  • Average humidity in September: 76%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March and November (73%).

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Average rainfall in September
Solomons, MD

Average rainfall in September - Solomons, MD
  • Average rainfall in September: 2.76"

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is January (1.93").

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Average rainfall days in September
Solomons, MD

Average rainfall days in September - Solomons, MD
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in September
Solomons, MD

Average snowfall in September - Solomons, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Solomons, MD

Average snowfall days in September - Solomons, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in September
Solomons, MD

Average sea temperature in September - Solomons, MD
  • Average sea temperature in September: 74.5°F

The best month for swimming (with the highest average sea temperature) is August (78.5°F).
The coldest month (with the lowest average sea temperature) is February (45.6°F).

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Average daylight in September /
Average sunshine in September
Solomons, MD

Average daylight in September / Average sunshine in September - Solomons, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in September
Solomons, MD

Average sunshine days in September - Solomons, MD
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is August (10.7 days).

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Average UV index in September
Solomons, MD

Average UV index in September - Solomons, MD
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in September
Solomons, MD

Average cloud cover in September - Solomons, MD
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in September
Solomons, MD

Average visibility in September - Solomons, MD
  • 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).

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Solomons, Maryland, USA

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