July weather forecast
Bolama, Guinea-Bissau

July

Weather in July

In July, the weather conditions take a drastic change, with a rainfall increase peaking at 226mm (8.9"). This month presents the wettest period of the year, with 23.4 days of recorded rainfall. Despite this, the persistent rain does not overshadow the captivating beauty of Bolama, Guinea-Bissau. Visitors looking to experience the peak of monsoon conditions will find this month the perfect time. Amid the showers, ample daylight is available, allowing visitors to truly absorb the vibrancy of the city.

Temperature

As July unfolds, the average high-temperature reaches a still hot 30.7°C (87.3°F), hinting at a slight fluctuation from the previous month. Throughout the nights in July, Bolama experiences an average low-temperature of 25.4°C (77.7°F).

Heat index

For July, the heat index is evaluated at a fiery hot 39°C (102.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In July, the average relative humidity is 77%.

Rainfall

In July, the rain falls for 23.4 days. Throughout July, 226mm (8.9") of precipitation is accumulated. In Bolama, during the entire year, the rain falls for 107.5 days and collects up to 726mm (28.58") of precipitation.

Sea temperature

In Bolama, the average seawater temperature in July is 28°C (82.4°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Bolama, the average length of the day in July is 12h and 44min.
On the first day of July, sunrise is at 06:42 and sunset at 19:29. On the last day of the month, sunrise is at 06:49 and sunset at 19:27 GMT.

Sunshine

In July, the average sunshine is 6.9h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 in July translates into these instructions:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Attention! The combination of sand and water reflections enhances UV ray intensity.

Frequently asked questions

How hot does it get in Bolama in July?
An average high-temperature, in July, in Bolama, is 30.7°C (87.3°F) and the average low-temperature is 25.4°C (77.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is evaluated at 39°C (102.2°F).
What is the average humidity in July?
The average relative humidity in July is 77%.
How much does it rain in July?
In Bolama, in July, during 23.4 rainfall days, 226mm (8.9") of precipitation is typically accumulated.
What is the water temperature in July?
In Bolama, the average seawater temperature in July is 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
How many hours of daylight does Bolama have in July?
The average day length in July is 12h and 44min.
What time are sunrise and sunset in July?
On the first day of July, sunrise is at 06:42 and sunset at 19:29. On the last day of the month, sunrise is at 06:49 and sunset at 19:27 GMT.
How long on average sun shines in July?
The average sunshine duration in July is 6.9h.
What are the months with the highest UV index?
The months with the highest UV index in Bolama are January through December, with an average maximum UV index of 7.
When is the lowest UV index?
January through December, with an average maximum UV index of 7, are months with the lowest UV index.
What is the UV index reading in July?
In July, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in July
Bolama, Guinea-Bissau
  • Average high temperature in July: 30.7°C

The warmest month (with the highest average high temperature) is March (35.5°C).
The month with the lowest average high temperature is August (29.6°C).

  • Average low temperature in July: 25.4°C

The month with the highest average low temperature is June (26°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).

Average pressure in July
Bolama, Guinea-Bissau
  • Average pressure in July: 1012.9mbar

The month with the highest atmospheric pressure is July (1012.9mbar).
The months with the lowest atmospheric pressure are March and April (1010.1mbar).

Average wind speed in July
Bolama, Guinea-Bissau
  • Average wind speed in July: 12.1km/h

The windiest month (with the highest average wind speed) is June (13.2km/h).
The calmest months (with the lowest average wind speed) are October and November (9km/h).

Average humidity in July
Bolama, Guinea-Bissau
  • Average humidity in July: 77%

The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (32%).

Average rainfall in July
Bolama, Guinea-Bissau
  • Average rainfall in July: 226mm

The wettest month (with the highest rainfall) is August (270mm).
The driest months (with the least rainfall) are January and February (0mm).

Average rainfall days in July
Bolama, Guinea-Bissau
  • Average rainfall days in July: 23.4 days

The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is January (0.3 days).

Average sea temperature in July
Bolama, Guinea-Bissau
  • Average sea temperature in July: 28°C

The best month for swimming (with the highest average sea temperature) is November (28.6°C).
The coldest month (with the lowest average sea temperature) is February (25.4°C).

Average daylight in July /
Average sunshine in July
Bolama, Guinea-Bissau
  • Average daylight in July: 12h and 4min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in July: 6h and 5min

The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 6min).

Average sunshine days in July
Bolama, Guinea-Bissau
  • Average sunshine days in July: 5.6 days

The month with the most sunshine days is January (30.7 days).
The month with the least sunshine days is August (2.9 days).

Average UV index in July
Bolama, Guinea-Bissau
  • Average UV index in July: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in July
Bolama, Guinea-Bissau
  • Average cloud cover in July: 51

The month with the most cloud cover is August (Cloud cover 57).
The months with the least cloud cover are March and April (Cloud cover 7).

Average visibility in July
Bolama, Guinea-Bissau
  • Average visibility in July: 9km

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).

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