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Bordeaux Harbour
Bordeaux Harbour Picture by Peter Frankland
Today
High
13°
Low
8°
100%
F6
Tomorrow
High
12°
Low
7°
20%
F4
Sat, 20 Dec
High
10°
Low
8°
15%
F5
Sun, 21 Dec
High
10°
Low
6°
45%
F4
Mon, 22 Dec
High
11°
Low
6°
30%
F3
Tue, 23 Dec
High
11°
Low
6°
25%
F3
Wed, 24 Dec
High
11°
Low
6°
30%
F4
Morning, Today
High
13°
Cloudy with rain, heavy at times.
100%
1
UV
F6
South strong F6, perhaps briefly fresh F5 at first, occasionally strong F7 later.
Sunrise 08:03
Afternoon
High
13°
Cloudy with occasional rain, perhaps heavy at times.
85%
1
UV
F7
South to southwest strong F6 to 7, perhaps gale F8 with gusts to 50mph.
Sunset 16:13
Night
Low
8°
Cloudy with rain at first, then clear spells developing after midnight with the chance of a shower.
90%
F5
South to southwest fresh F5 to strong F6, veering west moderate F4.
New

Shipping Forecast

General Situation
At 18:00UTC low, 948mb, 300 miles southwest of Iceland, expected slow-moving and filling to 971mb by midday Friday. Associated fronts affecting the area at times.

11.2°C
Sea Temperature

Forecast from 00:00UTC Thursday to 00:00UTC Friday.
Wind
South to southwest 6 to 7, decreasing locally 5 around dawn, increasing 7 to gale 8 by midday, with some gusts to 55 kts in the north of the area in the afternoon, veering west and decreasing 5 to 6 by midnight.
Sea State
Rough or very rough.
Weather
Occasional rain, locally heavy.
Visibility
Good, becoming moderate, locally poor at times.
Outlook from 00:00UTC Friday to 00:00UTC Saturday.
Wind
West 5 to 6, backing southwest decreasing 4 to 5 by Friday evening.
Sea State
Rough, decreasing rather rough with a moderate swell by morning.
Weather
Rain soon clearing, Isolated showers developing.
Visibility
Becoming good except in showers.

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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