Surf Forecasts:
Midshore Bay surf forecast from 18 Aug 2026:
- Best quality surf: Thursday 20 Aug, 3AM (local time) - 2.5ft (0.7m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 9AM (local time) - 4.5ft (1.3m), 15s period, SE swell with 744 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 2.5ft (0.7m), 8s period with ESE swell.
Best Forecast Surf Conditions for Midshore Bay this week:
The surf forecast for Midshore Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 3AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.3m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Midshore Bay in the next 16 days are 1.3m 15s and forecast to arrive on Wednesday (Aug 19) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Aug 22) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 3AM (Thu 20th Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 9AM (Wed 19th Aug) | 4.5ft (1.3m) 15s |
Table - best surf conditions forecast for Midshore Bay over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Tue night. Very mild (max 12°C on Fri afternoon, min 6°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat night. Very mild (max 17°C on Mon afternoon, min 5°C on Fri night). Winds increasing (light winds from the NW on Fri night, gales from the NW by Sat night). | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 14 | SE 15 | SSE 14 | SE 13 | ESE 9 | SE 17 | SSE 16 | SSE 16 | SE 12 | SSE 11 | SE 11 | SE 10 | E 14 | E 13 | E 13 | SSE 14 | SSE 16 | SSE 14 | SSE 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 833 | 744 | 138 | 51 | 45 | 72 | 104 | 95 | 40 | 24 | 29 | 16 | 15 | 14 | 14 | 36 | 100 | 41 | 25 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross | glassy | cross | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:18PM1.81m | 9:50AM1.81m | 10:13PM1.73m | 10:45AM1.77m | 11:07PM1.68m | 11:39AM1.75m | 00:00AM1.65m | 12:29PM1.75m | 00:49AM1.64m | 1:17PM1.76m | 1:35AM1.65m | 2:02PM1.78m | 2:19AM1.67m | ||||||
Low Tide | 3:35AM0.27m | 4:04PM0.36m | 4:25AM0.34m | 4:56PM0.42m | 5:14AM0.40m | 5:47PM0.46m | 6:03AM0.43m | 6:36PM0.48m | 6:49AM0.44m | 7:23PM0.48m | 7:35AM0.42m | 8:08PM0.46m | |||||||
 |  |  |  | | |  |  | | | | |  | | | | | | | |
 | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 8 | 9 | 11 | 10 | 9 | 10 | 9 | 10 | 12 | 7 | 14 | 14 | 13 | 14 | 14 | 12 | 16 | 17 | 14 |
Feels °C | 2 | 5 | 8 | 7 | 7 | 7 | 7 | 7 | 8 | 4 | 8 | 8 | 7 | 5 | 7 | 6 | 9 | 11 | 4 |
Swell 1 Height (m) Direction Period (s) | SE 14 | SE 15 | SE 9 | SE 8 | ESE 9 | ESE 8 | SSE 16 | SSE 16 | SE 12 | SSE 11 | SE 11 | SE 10 | NE 4 | E 13 | E 13 | SSE 14 | SSE 16 | SSE 14 | E 14 |
| kJ | 833 | 744 | 62 | 51 | 45 | 40 | 104 | 95 | 37 | 24 | 29 | 16 | 7 | 14 | 14 | 36 | 100 | 41 | 16 |
Swell 2 Height (m) Direction Period (s) | E 11 | E 11 | E 9 | SE 13 | SSE 7 | SE 17 | ESE 9 | E 10 | ESE 11 | ENE 4 | ENE 5 | — | E 14 | ENE 6 | NE 5 | E 13 | E 13 | E 14 | SSE 12 |
| kJ | 22 | 2 | 57 | 42 | 5 | 72 | 31 | 16 | 40 | 1 | 2 | — | 15 | 4 | 1 | 14 | 14 | 15 | 14 |
Swell 3 Height (m) Direction Period (s) | — | E 11 | SSE 14 | E 9 | ESE 12 | SSE 11 | ESE 12 | E 13 | — | E 11 | E 9 | E 16 | SE 10 | NE 8 | SE 9 | NE 8 | E 9 | SE 18 | SSE 16 |
| kJ | — | 9 | 138 | 16 | 14 | 22 | 15 | 12 | — | 9 | 2 | 5 | 4 | 3 | 3 | 2 | 1 | 12 | 25 |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 3 | — | — | — | — | — | — | E 11 | — | NNW 3 | N 3 | NW 4 | NW 2 | NW 3 | NNW 4 | N 4 | NNW 3 | N 3 |
| kJ | 4 | 2 | — | — | — | — | — | — | 39 | — | 3 | 8 | 18 | 1 | 6 | 13 | 19 | 4 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 40 | 9 | 9 | 9 | 0 | 44 | 0 | 0 | 76 | 20 | 79 | 76 | 116 | 61 | 82 | 9 | 32 | 22 | 46 |
Best forecast wave conditions in Canterbury | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Midshore Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Midshore Bay Surf forecast
The above surf forecast table for Midshore Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Midshore Bay can be found by selecting the local surf guide option on the grey menu. Our Midshore Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Midshore Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Midshore Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Canterbury? If you are looking for accommodation near Midshore Bay, camping, hotels and holiday cottages in Canterbury, consider staying in Christchurch which is 50 km (31 miles) away.
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