, with a relatively cool and dry season from May to August, and a hot and rainy season from November to March.
The city is located in Southern Brazil, in the state of Rio de Janeiro, at almost 23 degrees south latitude, and overlooks the Araruama lagoon, a salt lagoon where sports such as windsurfing and kitesurfing are practiced. In fact, the area is
, especially from August to February. Nearby are locations such as Cabo Frio, Arraial do Cabo, Armação dos Búzios, Iguaba Grande, and Araruama.
, also known as the "Costa do Sol" Region, characterized by slightly lower temperatures (as the name of the locality Cabo Frio or "Cold Cape" suggests) and by slightly lower rainfall than in the city of Rio de Janeiro and in the part of the Brazilian coast further to the north. This is due to the influence, albeit marginal, of the Falklands current.
In winter, from May to August, there can be cool days, with highs of 20 °C (68 °F) or even lower.
In the hot season, from November to March, the sea breeze tempers the heat, however, there can be very hot periods. Sometimes, it can get very hot even in winter, when the wind blows from the mountains located to the north.
From mid-August to October, in spring, the temperature rises and there can be very hot periods, however, sometimes cool, winter-like weather can return. The rains become more frequent, although they are not yet as frequent as in the summer.
The best time to visit São Pedro da Aldeia is from May to August, being the coolest and driest of the year. It must be said that the sea is not very warm, moreover, sometimes there can be cool days. For a beach holiday you can then choose the period from January to April, although it is hot and muggy and thunderstorms can break out.
. Here are the average temperatures.
January is generally a warm to hot, muggy month. The average temperature is of
27.1 °C, with a minimum of
22.9 °C and a maximum of
31.4 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C. However, it dropped to
18 °C in January 2012.

On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
38 °C in January 2015.

Precipitation amounts to
100 mm, distributed over 7 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
19.3 kph.

The average sea temperature is of
25.7 °C. Therefore, the sea is warm enough for swimming.
February, the hottest month of the year, is generally a warm to hot month. The average temperature is of
27.4 °C, with a minimum of
23.1 °C and a maximum of
31.7 °C.

On the coldest nights of the month, the temperature usually drops to around
20 °C. However, it dropped to
19 °C in February 2008.

On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
38 °C in February 2010.

Precipitation amounts to
85 mm, distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 69%.
The average wind speed is of
19.8 kph.

The average sea temperature is of
26.3 °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
26.3 °C, with a minimum of
22.5 °C and a maximum of
30.1 °C.

On the coldest nights of the month, the temperature usually drops to around
19 °C. However, it dropped to
18 °C in March 2012.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
37 °C in March 2010.

Precipitation amounts to
90 mm, distributed over 8 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
14.9 kph.

The average sea temperature is of
26.6 °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
24.6 °C, with a minimum of
20.9 °C and a maximum of
28.4 °C.

On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
13 °C in April 2014.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37 °C in April 2012.

Precipitation amounts to
100 mm, distributed over 7 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
13.8 kph.

The average sea temperature is of
26.2 °C. Therefore, the sea is warm enough for swimming.
May is generally a warm month. The average temperature is of
22.5 °C, with a minimum of
18.6 °C and a maximum of
26.4 °C.

On the coldest nights of the month, the temperature usually drops to around
14 °C. However, it dropped to
12 °C in May 2018.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
34 °C in May 2017.

Precipitation amounts to
70 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
12.9 kph.

The average sea temperature is of
24.8 °C. Therefore, the sea is warm enough for swimming.
June is generally a warm month. The average temperature is of
21.8 °C, with a minimum of
17.8 °C and a maximum of
25.7 °C.

On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
11 °C in June 2017.

On the warmest days of the month, the temperature usually reaches around
31.5 °C. However, it reached
35 °C in June 2000.

Precipitation amounts to
40 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
13.2 kph.

The average sea temperature is of
23.6 °C. Therefore, the sea can be considered barely acceptable for swimming.
July, the coolest month of the year, is generally a warm month. The average temperature is of
21.5 °C, with a minimum of
17.6 °C and a maximum of
25.4 °C.

On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
10 °C in July 2000.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
36 °C in July 2016.

Precipitation amounts to
40 mm, distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
16.2 kph.

The average sea temperature is of
22.9 °C. Therefore, the sea can be considered barely acceptable for swimming.
August is generally a warm month. The average temperature is of
21.8 °C, with a minimum of
18 °C and a maximum of
25.7 °C.

On the coldest nights of the month, the temperature usually drops to around
13 °C. However, it dropped to
12 °C in August 2000.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
34 °C in August 2000.

Precipitation amounts to
35 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
18.7 kph.

The average sea temperature is of
22.4 °C. Therefore, the sea can be considered barely acceptable for swimming.
September is generally a warm to hot, muggy month. The average temperature is of
22.9 °C, with a minimum of
19.4 °C and a maximum of
26.4 °C.

On the coldest nights of the month, the temperature usually drops to around
14.5 °C. However, it dropped to
12 °C in September 2012.

On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
36 °C in September 2008.

Precipitation amounts to
45 mm, distributed over 7 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
20.9 kph.

The average sea temperature is of
22.3 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a warm to hot, muggy month. The average temperature is of
23.8 °C, with a minimum of
20.6 °C and a maximum of
27 °C.

On the coldest nights of the month, the temperature usually drops to around
15.5 °C. However, it dropped to
12 °C in October 2014.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
35 °C in October 2014.

Precipitation amounts to
70 mm, distributed over 8 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
20.9 kph.

The average sea temperature is of
22.8 °C. Therefore, the sea can be considered barely acceptable for swimming.
November is generally a warm to hot, muggy month. The average temperature is of
24.2 °C, with a minimum of
21 °C and a maximum of
27.4 °C.

On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
14 °C in November 2011.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
38 °C in November 2019.

Precipitation amounts to
105 mm, distributed over 10 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
19.3 kph.

The average sea temperature is of
23.8 °C. Therefore, the sea is warm enough for swimming.
December is generally a warm to hot, muggy month. The average temperature is of
25.9 °C, with a minimum of
22.3 °C and a maximum of
29.5 °C.

On the coldest nights of the month, the temperature usually drops to around
18.5 °C. However, it dropped to
15 °C in December 2018.

On the warmest days of the month, the temperature usually reaches around
35.5 °C. However, it reached
38 °C in December 2014.

Precipitation amounts to
130 mm, distributed over 9 days.
The day lasts on average 12 hours and 20 minutes.
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
24.9 °C. Therefore, the sea is warm enough for swimming.