September weather forecastFishguard, United Kingdom

September

Weather in September

The first month of the autumn, September, is still a mild month in Fishguard, United Kingdom, with an average temperature ranging between max 15.8°C (60.4°F) and min 13.4°C (56.1°F).

Temperature

Fishguard records an average high-temperature of a moderate 15.8°C (60.4°F) in September, maintaining a close correlation with August's 17°C (62.6°F). September records a small disparity from daytime temperatures, marking an average low-temperature of 13.4°C (56.1°F) in Fishguard.

Humidity

In Fishguard, the average relative humidity in September is 82%.

Rainfall

In Fishguard, during September, the rain falls for 17.8 days and regularly aggregates up to 59mm (2.32") of precipitation. In Fishguard, during the entire year, the rain falls for 225.4 days and collects up to 791mm (31.14") of precipitation.

Snowfall

April through October are months without snowfall.

Sea temperature

August and September, with an average sea temperature of 16.3°C (61.3°F), are months with the warmest seawater.
Note: For most, swimming in 16.3°C (61.3°F) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

The average length of the day in September is 12h and 39min.
On the first day of the month, sunrise is at 6:32 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:20 am and sunset at 6:59 pm BST.

Sunshine

The average sunshine in September is 7.2h.

UV index

May through October, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Updated: Jul 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Fishguard in September has an average high-temperature of 15.8°C (60.4°F) and an average low-temperature of 13.4°C (56.1°F).

In September, the average relative humidity is 82%.

In Fishguard, in September, it is raining for 17.8 days, with typically 59mm (2.32") of accumulated precipitation.

In Fishguard, snow does not fall in April through October.

August and September, with an average sea temperature of 16.3°C (61.3°F), are months with the warmest seawater.

In Fishguard, the average seawater temperature in September is 16.3°C (61.3°F). For most, swimming in 16.3°C (61.3°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

In September, the average day length is 12h and 39min.

On the first day of September, sunrise is at 6:32 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 6:59 pm BST.

In Fishguard, the average sunshine duration in September is 7.2h.

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

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from 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

17°C

15.8°C

14.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

23km/h

23.9km/h

27.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

6.9

9.5

7.3

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Fishguard, United Kingdom

Average high temperature in September: 15.8°C

The warmest month (with the highest average high temperature) is August (17°C).
The month with the lowest average high temperature is February (8.3°C).

Average low temperature in September: 13.4°C

The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).

Average pressure in September
Fishguard, United Kingdom

Average pressure in September: 1016.5mbar

The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).

Average wind speed in September
Fishguard, United Kingdom

Average wind speed in September: 23.1km/h

The windiest month (with the highest average wind speed) is December (30.8km/h).
The calmest month (with the lowest average wind speed) is June (18.8km/h).

Average humidity in September
Fishguard, United Kingdom

Average humidity in September: 82%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (80%).

Average rainfall in September
Fishguard, United Kingdom

Average rainfall in September: 59mm

The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is May (34mm).

Average rainfall days in September
Fishguard, United Kingdom

Average rainfall days in September: 17.8 days

The month with the highest number of rainy days is November (23.2 days).
The month with the least rainy days is May (14.8 days).

Average snowfall in September
Fishguard, United Kingdom

Average snowfall in September: 0mm

The months with the highest snowfall are January and February (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Fishguard, United Kingdom

Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in September
Fishguard, United Kingdom

Average sea temperature in September: 16.3°C

The best months for swimming (with the highest average sea temperature) are August and September (16.3°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

Average daylight in September /
Average sunshine in September
Fishguard, United Kingdom

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 48min).

Average sunshine in September: 7h and 12min

The month with the most sunshine is May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).

Average sunshine days in September
Fishguard, United Kingdom

Average sunshine days in September: 9.5 days

The month with the most sunshine days is May (13.7 days).
The months with the least sunshine days are November and December (4.5 days).

Average UV index in September
Fishguard, United Kingdom

Average UV index in September: 4

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

Average cloud cover in September
Fishguard, United Kingdom

Average cloud cover in September: 50

The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 45).

Average visibility in September
Fishguard, United Kingdom

Average visibility in September: 10km

The months with the highest visibility are February, March, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, April, November and December (9km).