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Climate
The semi-arid climate is
characterised by rain that varies greatly in amount and timing. Almost
all of the rain falls during the summer months (roughly November to
April), and over two-thirds of it falls in January, February and March.
Eastern areas receive higher and more reliable rainfalls than the west,
but much of the region is too dry for crop production. Rainfalls over
the past 20 years have been generally lower than during the 1970s which,
in turn, were wetter than the 1960s. The high degree of variation in
rainfall means farming is a risky business. Good yields may be had in
some years, but crops often fail as a result of inadequate or badly
timed rainfalls. High evaporation rates and temperatures aggravate the
effects of limited rainfall.
Illustrations:
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Average annual rainfall
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Monthly average rainfall
for November to April
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Average number of days
with productive rainfall
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Total annual rainfall &
frequencies of different rainfalls
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Monthly rainfalls at
Oniipa for 1994/5 - 1998/9
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Average daily, min and
max temperatures at Ondangwa
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Average evaporation
rates at Mahanene & windspeed and rainfall at Ondangwa
To view the illustration in
more detail, click on the thumbnail.
 Average
annual rainfall (91 KB)
download jpg image
 Monthly
average rainfall for November, December, January, February, March and
April (100 KB)
download jpg image
 Average
number of days with productive rainfall in Tsumeb, Oshikuku and
Okaukeujo (81 KB)
download jpg image
 Total
annual rainfall (1940/41 - 1998/99) & frequencies of different rainfalls
for Oshikuku, Oniipa, Tsumeb & Okaukuejo (348 KB)
download jpg image
 Monthly
rainfalls at Oniipa for the seasons 1994/5 - 1998/9 (169 KB)
download jpg image
 Average
daily, min and max temperatures at Ondangwa (84 KB)
download jpg image
 Average
evaporation rates at Mahanene & windspeed and rainfall at Ondangwa (84
KB)
download jpg image
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