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Bordeaux Harbour
Bordeaux Harbour • Picture by Peter Frankland
Today
High
11°
Low
7°
70%
F4
Tomorrow
High
11°
Low
8°
60%
F4
Mon, 2 Feb
High
11°
Low
8°
35%
F5
Tue, 3 Feb
High
11°
Low
7°
55%
F4
Wed, 4 Feb
High
10°
Low
7°
30%
F5
Thu, 5 Feb
High
10°
Low
7°
15%
F5
Fri, 6 Feb
High
10°
Low
7°
35%
F4
Morning
Sunrise 07:45
Max
11°
70%
F4
Mainly cloudy with showers likely, perhaps heavy. Wind south to southwest moderate F4, occasionally light F3.
UV 1
Afternoon
Sunset 17:04
Max
11°
40%
F4
Sunny periods and a few showers possible. Wind southwest light F3 to moderate F4.
UV 1
Night
Waxing Gibbous
Min
7°
75%
F4
Clear spells, becoming cloudy with rain after midnight. Wind southwest light F3 to moderate F4, backing south to southeast moderate F4 to fresh F5 later.

Shipping Forecast

General Situation
At 18:00UTC low 975mb, Wales, expected 992mb by midday Saturday, with associated fronts affecting the area.

N/A
Sea Temperature

Forecast from 00:00UTC Saturday to 00:00UTC Sunday.
Wind
South to southwest 4 to 5, decreasing 3 to 4 after midday, veering west to southwest by dusk, increasing 4 to 5 by midnight.
Sea State
Rather rough to rough, decreasing slight to moderate with a moderate swell overnight.
Weather
Scattered showers, perhaps heavy, then rain in the west by midnight. A risk of thunderstorms.
Visibility
Good, occasionally moderate, locally poor.
Outlook from 00:00UTC Sunday to 00:00UTC Monday.
Wind
Southwest 4 to 5, backing south for a time around dawn, decreasing 3 to 4 by mid-morning, locally variable 2, veering north by dusk in the west of the area, then veering southeast everywhere later.
Sea State
Smooth to slight, occasionally moderate at first, with a moderate swell throughout.
Weather
Occasional rain.
Visibility
Good, occasionally moderate.

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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