Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the transition into September, Stranraer notes an average high-temperature of a still moderate 14.6°C (58.3°F), closely resembling August. During the nights of September, Stranraer maintains an almost steady temperature with an average low of 11.9°C (53.4°F).Humidity
In Stranraer, the average relative humidity in September is 84%.Rainfall
In Stranraer, in September, it is raining for 16.5 days, with typically 45mm (1.77") of accumulated precipitation. In Stranraer, during the entire year, the rain falls for 210.9 days and collects up to 632mm (24.88") of precipitation.Snowfall
In Stranraer, snow does not fall in April through November.Sea temperature
August and September, with an average sea temperature of 14.3°C (57.7°F), are months with the warmest seawater.Note: Swimming in 14.3°C (57.7°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In September, the average length of the day is 12h and 43min.On the first day of September, sunrise is at 6:27 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 6:58 pm BST.
Sunshine
In September, the average sunshine is 6.2h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the average September temperature in Stranraer?
What is the average humidity in September in Stranraer?
How many days does it rain in September in Stranraer?
When it does not snow in Stranraer?
What months are the sea warmest in Stranraer?
What is the sea water temperature in September in Stranraer?
How many hours of daylight does Stranraer have in September?
When are sunrise and sunset in September in Stranraer?
How long on average sun shines in September in Stranraer?
When is the highest UV index in Stranraer?
What is the UV index reading in September in Stranraer?
Average temperature in September
Stranraer, United Kingdom
- Average high temperature in September: 14.6°C
The warmest month (with the highest average high temperature) is July (15.9°C).
The month with the lowest average high temperature is February (6.9°C).
- Average low temperature in September: 11.9°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in September
Stranraer, United Kingdom
- Average pressure in September: 1014.1mbar
The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.3mbar).
Average wind speed in September
Stranraer, United Kingdom
- Average wind speed in September: 22.7km/h
The windiest month (with the highest average wind speed) is December (29.5km/h).
The calmest month (with the lowest average wind speed) is June (17.4km/h).
Average humidity in September
Stranraer, United Kingdom
- Average humidity in September: 84%
The month with the highest relative humidity is August (86%).
The months with the lowest relative humidity are April, May and November (81%).
Average rainfall in September
Stranraer, United Kingdom
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is November (72mm).
The driest months (with the least rainfall) are April and May (32mm).
Average rainfall days in September
Stranraer, United Kingdom
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is May (14.5 days).
Average snowfall in September
Stranraer, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Stranraer, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Stranraer, United Kingdom
- Average sea temperature in September: 14.3°C
The best months for swimming (with the highest average sea temperature) are August and September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (7.8°C).
Average daylight in September /
Average sunshine in September
Stranraer, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is June (Average sunshine: 7h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Stranraer, United Kingdom
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is May (14.2 days).
The month with the least sunshine days is December (7.2 days).
Average UV index in September
Stranraer, United Kingdom
- 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, March, November and December (UV index 2).
Average cloud cover in September
Stranraer, United Kingdom
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility in September
Stranraer, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are January, February, July and August (9km).
Stranraer, United Kingdom
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