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Bordeaux Harbour
Bordeaux Harbour Picture by Peter Frankland
Today
High
12°
Low
10°
35%
F5
Tomorrow
High
13°
Low
10°
80%
F6
Sun, 7 Dec
High
14°
Low
11°
70%
F5
Mon, 8 Dec
High
13°
Low
11°
30%
F5
Tue, 9 Dec
High
14°
Low
11°
60%
F6
Wed, 10 Dec
High
13°
Low
10°
40%
F4
Thu, 11 Dec
High
12°
Low
9°
20%
F3
Morning, Today
High
12°
Some brightness, becoming cloudy, perhaps with some patchy rain later.
35%
1
UV
F5
Southwest light F3 to moderate F4, backing south strong F6, perhaps strong F7 later.
Sunrise 07:51
Afternoon
High
12°
Cloudy with rain, likely heavy at times.
100%
1
UV
F6
South to southeast strong F6 to 7 with gusts to 50mph, occasionally gale F8 later, mainly in Alderney.
Sunset 16:13
Night
Low
10°
Cloudy with rain at first, clear spells and occasional showers developing, perhaps heavy.
90%
F7
South strong F6 to 7 with gusts to 50mph at first, perhaps gale F8, veering southwest to west strong F6 to 7 with gusts to 45mph later.
Full

Shipping Forecast

General Situation
At 18:00UTC low 965mb, mid-Atlantic, expected 975mb Rockall by Saturday, with associated fronts expected to affect the area on Friday.

11.6°C
Sea Temperature

Forecast from 00:00UTC Friday to 00:00UTC Saturday.
Wind
West to northwest 3 to 4, backing southwest 4 to 5 by mid-morning, then south 6 to 7 by midday, locally gale 8 with gusts to 55kt, veering southwest later.
Sea State
Slight with a moderate swell, increasing moderate to rather rough by mid-afternoon, increasing rough in the north and west, locally very rough in the northwest later.
Weather
Scattered showers, locally heavy with hail, dying out soon. Occasional rain from midday, locally heavy, clearing shortly after dusk to scattered showers, locally heavy with hail and perhaps thundery.
Visibility
Good, occasionally moderate or poor.
Outlook from 00:00UTC Saturday to 00:00UTC Sunday.
Wind
West to southwest 6 to 7, locally gale 8 with gusts to 50kt by dawn, decreasing 5 to 6 with gusts to 40kt by dusk, backing southwest 4 to 5 later.
Sea State
Slight to moderate with a low to moderate swell in the south at first, otherwise rough to very rough, locally high in the west, decreasing slight to moderate with a moderate to heavy swell later.
Weather
Occasional showers, locally heavy with hail, perhaps thundery. Then patchy rain spreading into the area later.
Visibility
Good, occasionally moderate or poor.

Understanding the Forecast

The wind speed is given in the Beaufort Scale on an 8 point compass with a variability of +-45°. Terms commonly used in association with the wind and other parts of the forecast include:

Veering - a change of wind in the clockwise sense (up to 180°)
Backing – a change of wind in the anticlockwise sense (up to 180°)
At first – within the first 12 hours
Later – within the latter 12 hours
Occasional/occasionally – lasts less than half the time (location or time specific)
At times – non-persistent (lasts more than half the forecast period)
For a time – a transient state

Waves or sea state is the forecast of the mean of the largest 7% of combined wind and swell waves. Wind waves are locally produced waves; swell waves are produced by distant strong winds. Sea state descriptions equate to the following wave heights:

Description

Height

Smooth

< 0.5m

Slight

0.5 - 1.25m

Moderate

1.25 - 2.5m

Rough

2.5 - 4.0m

Very Rough

4.0 - 6.0m

High

6.0 - 9.0m

Very High

9.0 - 14.0m

Phenomenal

> 14m

Visibility measurements equate to the following distances in nautical miles and kilometers:

Description

Distance N.Mi

Distance Km

Good

> 5 n.mi

> 10 km

Moderate

2 - 5 n.mi

3.7 - 9 km

Poor

0.6 - 2 n.mi

1.0 - 3.7 km

Very Poor

< 0.6 n.mi

< 1000 m

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