Boating forecast for Firth Of Thames

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  1. Extremely useful for viewing the forecast at a glance. You can quickly tell when the conditions are likely to better for boating and fishing.
  2. The summaries are useful to assist in understanding the weather patterns as well as planning your day and trips.
  3. The arrows show the direction of the wind. The direction of the wind is from the origin e.g. an easterly wind blows to the west. The dotted line is gust speed of the wind. For most spots you want the wind to be light (0 - 10 kts) for ocean conditions to be comfortable.
  4. The Sea height is the total wave height which includes both swell and chop. This is the most critical variable when looking at this forecast since a big sea height could be hazardous to boats or fishing off rocks etc. Swell refers to the height of the swell. The smaller the better. Chop refers to the height of the ocean chop. The less chop, the more comfortable conditions will be.
  5. The greater the swell period, the more comfortable the conditions are likely to be. It is believed sea sickness is triggered by a swell period around 5-6 seconds. However, the ocean chop can also cause sea sickness, so be aware of that too, especially if sea direction is considerably different to swell direction.
  6. Swell direction is represented by the origin of the swell. A westerly swell is moving to the east.
  7. Sea direction is represented by the origin of the chop. If there is not much chop this is not such a factor. However, you should check this variable if there is substantial chop, since if the swell direction is opposing the sea direction and swell and chop height are over 1 m, conditions could be rough.
  8. SwellMap presents tides as LAT (Lowest Astronomical Tide), which is the height above the lowest tidal water level

Forecast updated at 11:15 Tuesday 29 July (Pacific/Auckland local time)

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Swell Sea Chop
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Forecast updated at 11:15 Tuesday 29 July (Pacific/Auckland local time)

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Tue 29 JulRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h30.30.00.33NWNN:1215
9h50.30.00.33NWNN:810
15h30.70.00.74NNN:1721
21h40.80.00.84NWNNW:1013
Low: 02:40 am (0.67 m); High: 08:30 am (2.57 m); Low: 02:50 pm (0.59 m); High: 08:50 pm (2.72 m);
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Wed 30 JulRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h31.00.01.04NWNNW:2127
9h40.80.00.84NWNNW:1012
15h50.50.00.54NNN:79
21h60.30.00.36N--NW:810
Low: 03:20 am (0.65 m); High: 09:00 am (2.56 m); Low: 03:30 pm (0.6 m); High: 09:30 pm (2.7 m);
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Thu 31 JulRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h50.40.00.46NNWNW:1012
9h50.50.00.53NWNW:1012
15h40.30.00.36NNWNW:1214
21h40.30.00.36N--N:1012
Low: 03:50 am (0.62 m); High: 09:40 am (2.55 m);
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Fri 1 AugRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h60.30.00.36N--N:68
9h50.30.00.36NNNE:912
15h40.50.00.53NWNN:1316
21h31.20.01.25NWWN:2030
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Sat 2 AugRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h21.20.11.25NWNN:1923
9h21.10.11.16NWNN:2025
15h21.30.11.36NWNN:2127
21h21.40.21.46NWNN:2431
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Sun 3 AugRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h21.60.31.56NWNN:2431
9h21.90.51.87NWNN:2533
15h21.80.51.77NWNN:2429
21h21.30.41.37NWNN:2227
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Mon 4 AugRating Summary Sea Swell Chop Period Swell dir Sea dir Wind Gusts
mmms°°ktskts
3h30.90.20.95NWWNW:1216
9h30.70.20.75NSWSW:1316
15h20.60.20.58NWSWSW:1519

Forecast updated at 11:15 Tuesday 29 July (Pacific/Auckland local time)

Current sea temperature

Firth Of Thames sea temperature: 15°C

Sunrise and sunset for today

SunriseSunset
07:2217:27

Moon phases for the next month

Mon 4 AugMon 11 AugMon 18 AugTue 26 Aug
First Quarter Full Moon Last Quarter New Moon

Rating information for Boating

This rating is a guide to determine how pleasant the boating conditions are likely to be. But this should not be treated as a substitute for using all available sources of information for the purpose of safety.
10A green rating between 7 and 10 indicates calm waters, based on little or no wind, and swell height less than a metre.
6An orange rating between 4 and 6 indicates average boating conditions, possibly affected by light-fair winds, and a swell height around 1-2 metres.
1A red rating between 1 and 3 suggests poor and possibly dangerous conditions such as strong winds and a big swell height 2-3 metres plus.
?No rating available.

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