Monthly totals vary erratically from 11 to 244mm. (Ref 1)
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SWARTVLEI ESTUARY: Climate |
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General |
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This section deals with meteorological observations recorded at the IFWS Swartvlei Station between January 1975 and December 1982. The mean annual precipitation of 786mm is lower than for the Swartvlei catchment where the annual rainfall is between 900 and 1000mm per year (Adamson, 1975). It rains throughout the year with no identifiable wet or dry season. (Ref 1) |
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The daily maximum air temperature at Swartvlei is 25ºC in summer and 19ºC in winter, whilst the mean daily minimum is 15ºC in summer and 7ºC in winter. The absolute minimum recorded temperature is 2ºC and maximum 33ºC. (Ref 1) |
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Rainfall |
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This
section deals with meteorological observations recorded at the IFWS
Swartvlei Station between January 1975 and December 1982. The mean
annual precipitation of 786mm is lower than for the Swartvlei catchment
where the annual rainfall is between 900 and 1000mm per year (Adamson,
1975). It rains throughout the year with no identifiable wet or dry
season.
Monthly totals vary erratically from 11 to 244mm. (Ref 1) |
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Wind |
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According
to Howard-Williams and Allanson, (1978b) south-west winds predominate
throughout the year. North and north-east (Berg winds) are fairly common
in the winter months. In summer the wind usually blows from the
south-east. Strong winds are rare in the area with 97 percent below 30km
per hour. (Ref
1) |
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