Rainfall. In Christchurch, in March, the average water temperature is 15.3°C (59.5°F).For most, swimming in 15.3°C (59.5°F) is not an enjoyable activity. Similar Latitude Cities Christchurch sits on a latitude of 43.3 degrees South. The mean daily maximum air temperatures is 22.5 degrees Celsius (72.5 °Fahrenheit) in January, and 11.3 °C (52.3 °F) in July. The norwester is a fohn type wind – hot and dry – from the Southern Alps that can raise the temperature by 10 or 15 degrees centigrade within an hour or so.

On 13 September 2012 the World Meteorological Organisation disqualified the record for the highest recorded temperature, exactly 90 years after it had been established at El Azizia, Libya, with a measurement of 58°Celsius. NIWA's 'seven-station' temperature series uses temperature measurements from seven 'climate stations'. Besides water temperature, you can also get information about the weather for today, tomorrow and the upcoming days, surf forecast, as well as the data on sunrise/sunset and moonrise/moonset at a given point on any given day.

Christchurch has a temperate maritime climate with dry warm summers. New Zealand’s average temperature increased at a rate of 0.95 degrees Celsius per century, meaning that our average temperature in 2016 was 1 degree Celsius warmer than in 1909. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F). The lowest temperature ever recorded in New Zealand was – 22°C at Ophir, Central Otago. Global average land temperatures increased around 0.9–1.1 degrees Celsius a century over the same time period.

The tide is currently falling in Christchurch. The January 2018 global land surface temperature departure from average of +1.11°C (+2.00°F) was the lowest since 2013 and the eighth highest January land global temperature on record. The new record for our lowest recorded daily minimum temperature occurred 108 years ago, at Ranfurly in Central Otago, in 1903: a shivering -25.6°C The average seawater temperature, in May, in Christchurch, is 12.3°C (54.1°F).Swimming in 12.3°C (54.1°F) is considered dangerous.
New Zealand’s average rainfall is high – between 640mm and 1500mm – and evenly spread throughout the year. The highest temperature ever recorded in New Zealand was 42°C, in Marlborough, Christchurch, and Rangiora (in Canterbury). Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. New Zealand climate scientists have detected the coldest day ever recorded in New Zealand, while looking at old New Zealand temperature records being entered into the National Climate database. Christchurch was the warmest place in New Zealand, at a record-breaking 36.1 degrees Celcius. In winter it is common for the temperature to fall below 0 °C (32 °F) at night. The locations were chosen because they provide a representative geographical spread across NZ and have reliable records dating back at least to the early 1900s. As you can see on the tide chart, the highest tide of 2.15m was at 12:27 am and the lowest tide of 0.65m was at 6:43 am. Click here to see Christchurch… Whiel MetService don't expect it to get any higher today, the peak broke their previous December record of 35.4C, set in 1975. According to NCEI's Regional Analysis , Oceania had its warmest January on record, while Europe had its second warmest January, behind 2007. This data the coastal surface water temperature in Christchurch.