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São Cristóvão

Weather in Сан-Кристован by month: what to expect

Photo: Wikimedia Commons, CC BY 2.0

Weather overview

Сан-Кристован lies in Brazil’s tropical zone, where warm temperatures persist year-round, but the rhythm of the seasons is shaped by rainfall rather than cold. From January to March, the city experiences its wettest period, with frequent showers that can briefly cool the air. By April, the rains ease, giving way to drier months that last through July. From August onward, the weather gradually shifts back toward a mix of sun and occasional rain, making the transition to the next wet season smooth.

Travelers will find that Сан-Кристован rarely strays far from warmth, even at night. The coolest stretch falls between June and August, when daytime highs hover around +25 °C, while nights dip to around +19 °C. The rest of the year remains consistently tropical, with daytime temperatures often reaching +27...+30 °C. The sea stays inviting, rarely dropping below +22 °C, though it’s warmest in February at +27.4 °C.

Temperature

In Сан-Кристован, the temperature follows a gentle curve rather than sharp swings. The hottest months—January, February, and December—see highs of +30.6 °C, +30.3 °C, and +28.5 °C respectively, with nights staying warm at +24 °C or above. The mildest period arrives in July, when the mercury settles around +21.6 °C during the day and +18.8 °C at night, offering a brief respite from the usual heat.

Between April and October, the city enjoys a stretch of moderate warmth, with daytime temperatures ranging from +24.8 °C to +26.9 °C. Nights cool slightly but remain comfortable, rarely falling below +20 °C except in June and July. Even in the so-called cooler months, Сан-Кристован retains its tropical feel, with no risk of cold snaps or frost. The sea temperature mirrors this stability, staying above +22 °C year-round.

Average air temperature °C
Average air temperature
Month Minimum Maximum
January 24.3 30.6
February 24.2 30.3
March 23.8 29.4
April 22.4 27.6
May 20.7 26.6
June 19.7 25.7
July 18.8 25.3
August 19.1 25.4
September 20.8 26.8
October 21.6 26.9
November 21.6 27
December 23 28.5

Precipitation

Сан-Кристован has two distinct rainfall patterns: a wetter phase from January to March and a drier stretch from April to July. The heaviest rains arrive in January, averaging 128.8 mm, while February and March follow with 81.5 mm and 99 mm respectively. These months can bring short, intense downpours, often in the late afternoon, but they rarely disrupt plans for long.

From April onward, the rains taper off, with July being the driest month at just 30.5 mm. The period from August to November sees a gradual return of showers, though they remain lighter and less frequent than in the early months of the year. Even during the wetter season, Сан-Кристован enjoys plenty of sunshine between rain showers, making it possible to explore the city without long delays.

Precipitation amount mm
Precipitation amount
Month Precipitation
January 128.8
February 81.5
March 99
April 44.4
May 46.8
June 38.7
July 30.5
August 79.5
September 56.1
October 70.4
November 90.9
December 89.5

What to pack

For a trip to Сан-Кристован between December and March, pack lightweight, breathable clothing—think cotton or linen—to stay comfortable in the heat and humidity. A compact umbrella or a light rain jacket will come in handy for sudden showers, especially in January and February. Sandals or breathable shoes are ideal for walking, while a wide-brimmed hat and sunglasses will help shield you from the strong sun.

From April to November, the weather in Сан-Кристован is drier and slightly cooler, so you can rely on similar lightweight outfits but with a few additions. A light sweater or long-sleeved shirt may be useful for evenings in June or July, when temperatures dip to around +19 °C. If you plan to visit the coast, swimwear is a must year-round, as the sea remains warm enough for swimming even in the cooler months.

Average monthly wind m/s
Average monthly wind
Month Wind speed
January 3.4
February 3.3
March 3.3
April 3.1
May 2.9
June 2.8
July 2.9
August 3.1
September 3.4
October 3.5
November 3.5
December 3.5