March weather forecast
Isles of Scilly, United Kingdom

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March

Weather in March

In March, Isles of Scilly start to experience notable changes in its weather compared to February. The transition from winter to spring is underway, causing the environment to slowly warm up. The change also brings a touch of moisture to the air, as seen by the steady increase in relative humidity up to 80%. The general public may start to enjoy longer daylight hours, savoring the pleasant change in weather and the vibrant atmosphere.

Temperature

During March, Isles of Scilly records an average high-temperature of a still chilly 9.8°C (49.6°F), marking a slight divergence from February's 9.7°C (49.5°F). Isles of Scilly registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 8.1°C (46.6°F) during March.

Humidity

In Isles of Scilly, the average relative humidity in March is 80%.

Rainfall

In Isles of Scilly, during March, the rain falls for 16 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, there are 200.8 rainfall days, and 599mm (23.58") of precipitation is accumulated.

Snowfall

Months with snowfall in Isles of Scilly are March and October. March has the most snowfall days of the year. Snow falls for 0.2 days.

Sea temperature

With an average sea temperature of 10.1°C (50.2°F), March is the month with the coldest seawater.
Note: Dipping into 10.1°C (50.2°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.

Daylight

The average length of the day in March is 11h and 55min.
On the first day of the month, sunrise is at 7:06 am and sunset at 6:07 pm. On the last day of March, sunrise is at 6:02 am and sunset at 6:55 pm GMT.

Sunshine

The average sunshine in March is 5.9h.

UV index

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 3 in March interprets into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Aug 13, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are March temperatures?
In Isles of Scilly, in March, the average high-temperature is 9.8°C (49.6°F), and the average low-temperature is 8.1°C (46.6°F).
What is the average humidity in March?
In Isles of Scilly, the average relative humidity in March is 80%.
How many days does it rain in March in Isles of Scilly?
In Isles of Scilly, during March, the rain falls for 16 days and regularly aggregates up to 44mm (1.73") of precipitation.
What is the snowiest month?
March has the most snowfall days of the year. Snow falls for 0.2 days.
When does it start snowing?
March is the first month it typically snows. Throughout March, there are 0.2 snowfall days.
What is the month with the coldest sea water?
March is the month with the coldest seawater, with an average sea temperature of 10.1°C (50.2°F).
What is the water temperature in March?
In March, the average sea temperature in Isles of Scilly is 10.1°C (50.2°F). Swimming in 10.1°C (50.2°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.
How many hours of daylight does Isles of Scilly have in March?
The average day length in March is 11h and 55min.
When are sunrise and sunset in March?
In March, on the first day of the month, sunrise is at 7:06 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 6:55 pm GMT.
How many hours of sunshine does Isles of Scilly have in March?
The average sunshine duration in March is 5.9h.
When is the lowest UV index?
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the UV index reading in March?
In Isles of Scilly, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMarchAMJJASOND
Feb
March
Apr
Average high temperature
9.7°C
9.8°C
10.8°C
Average low temperature
7.9°C
8.1°C
9.2°C
Average pressure
1014.3mbar
1015.7mbar
1015.3mbar
Average wind speed
35km/h
30.8km/h
26.3km/h
Average max. wind speed
37km/h
32.3km/h
27.6km/h
Average wind speed gusts
49.5km/h
44.8km/h
39km/h
Average humidity
78%
80%
82%
Average rainfall
51mm
44mm
40mm
Average rainfall days
16.3
16
14.8
Average snowfall days
0
0.2
0
Average sea temperature
10.3°C
10.1°C
10.8°C
Average daylight
10h 1min
11h 5min
13h 5min
Average sunshine
4h 2min
5h 5min
8h 2min
Average sunshine days
8.2
11.2
12.7
Average UV index
3
3
3
Average cloud cover
58%
54%
44%
Average visibility
10km
10km
10km
Average temperature in March
Isles of Scilly, United Kingdom
  • Average high temperature in March: 9.8°C

The warmest month (with the highest average high temperature) is August (17.2°C).
The month with the lowest average high temperature is February (9.7°C).

  • Average low temperature in March: 8.1°C

The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (7.9°C).

Average pressure in March
Isles of Scilly, United Kingdom
  • Average pressure in March: 1015.7mbar

The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

Average wind speed in March
Isles of Scilly, United Kingdom
  • Average wind speed in March: 30.8km/h

The windiest month (with the highest average wind speed) is December (35.9km/h).
The calmest month (with the lowest average wind speed) is July (23.8km/h).

Average humidity in March
Isles of Scilly, United Kingdom
  • Average humidity in March: 80%

The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January, February, November and December (78%).

Average rainfall in March
Isles of Scilly, United Kingdom
  • Average rainfall in March: 44mm

The wettest month (with the highest rainfall) is November (86mm).
The driest month (with the least rainfall) is May (29mm).

Average rainfall days in March
Isles of Scilly, United Kingdom
  • Average rainfall days in March: 16 days

The month with the highest number of rainy days is November (21.3 days).
The month with the least rainy days is June (13.1 days).

Average snowfall days in March
Isles of Scilly, United Kingdom
  • Average snowfall days in March: 0.2 days

The month with the highest number of snowfall days is March (0.2 days).
The months with the least snowfall days are January, February, April, May, June, July, August, September, November and December (0 days).

Average sea temperature in March
Isles of Scilly, United Kingdom
  • Average sea temperature in March: 10.1°C

The best month for swimming (with the highest average sea temperature) is August (17.3°C).
The coldest month (with the lowest average sea temperature) is March (10.1°C).

Average daylight in March /
Average sunshine in March
Isles of Scilly, United Kingdom
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in March: 5h and 5min

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 54min).

Average sunshine days in March
Isles of Scilly, United Kingdom
  • Average sunshine days in March: 11.2 days

The month with the most sunshine days is June (15 days).
The month with the least sunshine days is November (5.7 days).

Average UV index in March
Isles of Scilly, United Kingdom
  • Average UV index in March: 3

The month with the highest UV index is August (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).

Average cloud cover in March
Isles of Scilly, United Kingdom
  • Average cloud cover in March: 54

The months with the most cloud cover are January and December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 44).

Average visibility in March
Isles of Scilly, United Kingdom
  • Average visibility in March: 10km

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

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