Climate and Seasonality
January to March - Hot and wet.
April to May - Warm days and cool evenings, clear skies after the rains and should be calm on the lake. Possibility of light rains.
June to July - Warm days. Cool to cold evenings. By July the lake can become windy.
August - Warm to hot days. Cool nights and winds on the lake.
September to October - Hot to very hot days. Lake calming down with warm evenings.
November to December - Either hot and wet or hot and dry.
Temperatures vary from below freezing (at night on the high plateau in winter - July) to 38°C (in the Lower Shire Valley in summer - December). To generalise is difficult but through much of the year temperatures during the day are usually in the mid-20s. In the short hot season, November-December, maximum temperatures may rise to the lower 30s. Lake Malawi's surface temperatures vary from about 24°C to 28°C.
There are a couple of anomalies that can occur i.e. the rains should stop in April and return in November but the north occasionally experiences summer rains and Zomba and Nyika can experience mist and drizzle throughout the year. Winds can brew up on the lake at any time. Zomba and Nyika National Park are at a higher altitude and are always chilly in the evenings, no matter what time of year. Lake Malawi and Mvuu are all at an altitude of about 400 metres above sea level and will be much warmer.