Climate in Bahia

Average daytime and nighttime temperatures

All climate diagrams on this site result from the collected data from 14 measuring weather stations in Bahia.
Weather stations at an altitude above 870m have not been included.
All data correspond to the average monthly values of the last 20 years.

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Bahia is one of the coldest regions in Brazil with an average daily high temperature of only 30 degrees. High humidity and hot temperatures make the weather pleasant at times but also tropical humid. It is warm to hot all year round, inviting bathing at average water temperatures of 26 degrees. Due to less rain, the best time for traveling is from September to October. Most precipitation falls from March to April.
Overview: Climate in Brazil
Daylengths and sun positions in Brazil
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 8 hours per day, September is the sunniest month in the region of Bahia. In May, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 9 rain days, March offers the most rain days, while September has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 1.0 mm, the least amount of rain falls in September. November, on the other hand, has the most rain.
Water temperatures in °C
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest water temperatures in Bahia are in January, when the water is 27 °C.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With humidity averaging 83%, May is the most uncomfortable. In February, on the other hand, it is easier to endure.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is exceeded throughout the year in Bahia.
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity, the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Map of Bahia

Most important cities in the region »Bahia«

Alone 2 major cities with over 500,000 inhabitants are located here. The region has a west-east extension of about 820 km and over 1010 km from north to south.

CityPopulationGeo position
Salvador2,871,56012° 58' 16"S38° 30' 39"W
Feira de Santana564,05012° 16' 0"S38° 58' 0"W
Vitória da Conquista260,26014° 51' 58"S40° 50' 22"W
Itabuna199,74914° 47' 8"S39° 16' 49"W
Camaçari188,75812° 41' 51"S38° 19' 27"W
Lauro de Freitas163,44912° 53' 40"S38° 19' 38"W
Ilhéus148,43714° 47' 37"S39° 2' 22"W
Jequié136,51813° 51' 32"S40° 5' 6"W
Barreiras123,74112° 9' 10"S44° 59' 24"W
Alagoinhas122,32412° 8' 8"S38° 25' 9"W
Simões Filho116,66212° 47' 4"S38° 24' 14"W
Paulo Afonso93,4049° 24' 22"S38° 12' 53"W
Porto Seguro80,24016° 26' 59"S39° 3' 53"W
Santo Antônio de Jesus73,95712° 58' 8"S39° 15' 41"W
Irecê63,62611° 18' 15"S41° 51' 21"W
Valença63,23113° 22' 13"S39° 4' 23"W
Itapetinga59,72115° 14' 56"S40° 14' 52"W
Guanambi58,87714° 13' 24"S42° 46' 53"W
Nova Viçosa55,98017° 53' 31"S39° 22' 19"W
Serrinha49,07811° 39' 51"S39° 0' 27"W
Senhor do Bonfim48,47110° 27' 41"S40° 11' 22"W
Cruz das Almas47,84412° 40' 12"S39° 6' 7"W
Jacobina47,63711° 10' 53"S40° 30' 49"W
Itamaraju47,62817° 2' 21"S39° 31' 52"W
Itaberaba47,30112° 31' 39"S40° 18' 25"W
Santo Amaro46,74812° 32' 48"S38° 42' 43"W
Brumado41,98914° 12' 13"S41° 39' 55"W
Jaguaquara41,49813° 31' 50"S39° 58' 15"W
Bom Jesus da Lapa40,69113° 15' 18"S43° 25' 5"W
Catu39,93212° 21' 11"S38° 22' 44"W

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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