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Zooplankton of Wellington Harbour, New Zealand
Surface Water Temperatures
Surface Water Temperatures
The accuracy of the monthly mean temperature is limited by insufficient recordings, but from the information available broad seasonal patterns can be
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seen (Text-fig. 8). Highest temperatures, above 18.0°C., were recorded in February of each year, and the coolest months were July and August when temperatures below 10.0°C. were recorded. The highest temperature recorded was 20.0°C. on 1 February 1962, and the lowest temperature was 8.8°C. on 11 August 1961.
Text-fig. 2.—Location map of Wellington Harbour. Showing the harbour plankton research stations.
seen (Text-fig. 8). Highest temperatures, above 18.0°C., were recorded in February of each year, and the coolest months were July and August when temperatures below 10.0°C. were recorded. The highest temperature recorded was 20.0°C. on 1 February 1962, and the lowest temperature was 8.8°C. on 11 August 1961.Mean monthly surface water temperatures varied from year to year. This variation was due to the difference in air temperatures as shown by the meteorological records. Thus the milder winter of 1962 kept the mean water temperature above that of 1961 and 1963 by approximately 2°C. (Text-fig. 8). Short period temperature fluctuations of 3°C. or 4°C. were recorded mainly in winter during calm weather and in midsummer after cold southerly rain.