The climate of Pemba (formerly Porto Amélia) is tropical, with a hot, rainy season from December to April and a dry season from June to October, within which there is a relatively cool period from June to August.
. Here are the average temperatures.
January is generally a very hot, muggy month. The average temperature is of
27.7 °C, with a minimum of
24.2 °C and a maximum of
31.1 °C.

On the coldest nights of the month, the temperature usually drops to around
21.5 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
145 mm, distributed over 11 days.
The day lasts on average 12 hours and 50 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
13.5 kph.

The average sea temperature is of
28.7 °C. Therefore, the sea is pleasantly warm and allows long swims.
February is generally a warm to hot, muggy month. The average temperature is of
27.3 °C, with a minimum of
24 °C and a maximum of
30.6 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C.

On the warmest days of the month, the temperature usually reaches around
33 °C.

Precipitation amounts to
155 mm, distributed over 10 days.
The day lasts on average 12 hours and 30 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
11.7 kph.

The average sea temperature is of
28.9 °C. Therefore, the sea is pleasantly warm and allows long swims.
March is generally a warm to hot, muggy month. The average temperature is of
27.4 °C, with a minimum of
23.8 °C and a maximum of
31 °C.

On the coldest nights of the month, the temperature usually drops to around
20 °C.

On the warmest days of the month, the temperature usually reaches around
33 °C.

Precipitation amounts to
200 mm, distributed over 13 days.
The day lasts on average 12 hours and 5 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of
11.5 kph.

The average sea temperature is of
29.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
April is generally a warm to hot, muggy month. The average temperature is of
26.6 °C, with a minimum of
22.9 °C and a maximum of
30.4 °C.

On the coldest nights of the month, the temperature usually drops to around
19.5 °C.

On the warmest days of the month, the temperature usually reaches around
32.5 °C.

Precipitation amounts to
120 mm, distributed over 9 days.
The day lasts on average 11 hours and 50 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
16.4 kph.

The average sea temperature is of
29 °C. Therefore, the sea is pleasantly warm and allows long swims.
May is generally a warm to hot, muggy month. The average temperature is of
25.3 °C, with a minimum of
21.2 °C and a maximum of
29.4 °C.

On the coldest nights of the month, the temperature usually drops to around
18 °C.

On the warmest days of the month, the temperature usually reaches around
31 °C.

Precipitation amounts to
30 mm, distributed over 3 days.
The day lasts on average 11 hours and 30 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
18.1 kph.

The average sea temperature is of
28 °C. Therefore, the sea is pleasantly warm and allows long swims.
June is generally a warm to hot, muggy month. The average temperature is of
24 °C, with a minimum of
19.8 °C and a maximum of
28.3 °C.

On the coldest nights of the month, the temperature usually drops to around
16.5 °C.

On the warmest days of the month, the temperature usually reaches around
30 °C.

Precipitation amounts to
15 mm, distributed over 2 days.
The day lasts on average 11 hours and 25 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
19.2 kph.

The average sea temperature is of
26.9 °C. Therefore, the sea is pleasantly warm and allows long swims.
July, the coolest month of the year, is generally a warm to hot, muggy month. The average temperature is of
23.3 °C, with a minimum of
19.1 °C and a maximum of
27.5 °C.

On the coldest nights of the month, the temperature usually drops to around
16 °C.

On the warmest days of the month, the temperature usually reaches around
29 °C.

Precipitation amounts to
10 mm, distributed over 2 days.
The day lasts on average 11 hours and 25 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
20.2 kph.

The average sea temperature is of
25.8 °C. Therefore, the sea is warm enough for swimming.
August is generally a warm to hot, muggy month. The average temperature is of
23.8 °C, with a minimum of
19.9 °C and a maximum of
27.7 °C.

On the coldest nights of the month, the temperature usually drops to around
16.5 °C.

On the warmest days of the month, the temperature usually reaches around
30.5 °C.

Precipitation amounts to only
8 mm, and all occurs in one day.
The day lasts on average 11 hours and 40 minutes.

There are on average 8.5 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
18.1 kph.

The average sea temperature is of
25.4 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm to hot, muggy month. The average temperature is of
24.7 °C, with a minimum of
20.9 °C and a maximum of
28.5 °C.

On the coldest nights of the month, the temperature usually drops to around
18 °C.

On the warmest days of the month, the temperature usually reaches around
30.5 °C.

Precipitation amounts to only
2 mm, and all occurs in one day.
The day lasts on average 12 hours and 0 minutes.

There are on average 8.5 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
16.1 kph.

The average sea temperature is of
25.7 °C. Therefore, the sea is warm enough for swimming.
October is generally a warm to hot, muggy month. The average temperature is of
26 °C, with a minimum of
22.5 °C and a maximum of
29.5 °C.

On the coldest nights of the month, the temperature usually drops to around
20 °C.

On the warmest days of the month, the temperature usually reaches around
31.5 °C.

Precipitation amounts to
10 mm, and all occurs in one day.
The day lasts on average 12 hours and 25 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
17.3 kph.

The average sea temperature is of
26.6 °C. Therefore, the sea is pleasantly warm and allows long swims.
November is generally a warm to hot, muggy month. The average temperature is of
27.2 °C, with a minimum of
24 °C and a maximum of
30.3 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C.

On the warmest days of the month, the temperature usually reaches around
32 °C.

Precipitation amounts to
40 mm, distributed over 4 days.
The day lasts on average 12 hours and 40 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
17.8 kph.

The average sea temperature is of
27.6 °C. Therefore, the sea is pleasantly warm and allows long swims.
December is generally a very hot, muggy month. The average temperature is of
27.9 °C, with a minimum of
24.8 °C and a maximum of
31 °C.

On the coldest nights of the month, the temperature usually drops to around
21.5 °C.

On the warmest days of the month, the temperature usually reaches around
33.5 °C.

Precipitation amounts to
125 mm, distributed over 8 days.
The day lasts on average 12 hours and 55 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
15.5 kph.

The average sea temperature is of
28.6 °C. Therefore, the sea is pleasantly warm and allows long swims.