Country Overview For American Samoa
The climate in American Samoa is typically tropical marine, moderated by southeast trade winds; annual rainfall averages about 3 m; rainy season (November to April), dry season (May to October); little seasonal temperature variation. The terrain: five volcanic islands with rugged peaks and limited coastal plains, two coral atolls (Rose Island, Swains Island). For Pago Pago in January the daily average maximum temperatures is 33°C with the average minimum 29°C, while in June the average maximum is 32°C with a minimum of 29°C. The wettest month for Pago Pago is December with an average of 1.4mm of precipitation falling while the driest month is January with 0.0mm falling.
HISTORICAL MONTHLY AVERAGES FOR JULY
The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Pago Pago.
Throughout the month of July daytime temperatures will generally reach highs of around 32°C that's about 90°F. At night the average minimum temperature drops down to around 29°C, that's 84°F.
In recent times the highest recorded temperature in July has been 39°C that's 101°F, with the lowest recorded temperature 23°C, about 73°F.
The average daily relative humidity for July is around -999%.
The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. From this a comfort level is calculated providing categories on how heat conditions might adversely affect someone.
Comfort Levels: Given average maximum temperatures and humidity levels generally you should not anticipate any discomfort from heat (see heat index for more information).
The average monthly amount of precipitation has been recorded at around 0 mm, that's 0 inches.
Estimated Hours of Sunshine per Day
We calculate sunshine hours per day using our past forecast data. For July expect the sun to shine for an average of 7 hours per day. This represents the average number of hours in the daytime that the sun is visible and not obscured by cloud e.g. the average number of hours the sun is actually out and shining. Note we calculate hours of sunshine per day using our past forecast data, not observation data, thus it is an estimate and not actual.
The average daily wind speed in July has been around 15 km/h, that’s the equivalent to about 9 mph, or 8 knots. In recent years the maximum sustained wind speed has reached 56 km/h, that’s the equivalent of around 35 mph, or 30 knots.
SWIMMING AND WATER TEMPERATURE
The temperature of water an individual will feel comfortable in is very much personal preference. What feels unbearably cold to one person for a swim might be fine for another. We have created our own Swimming Water Temperature Index offering a guide to water temperature and comfort levels for swimming;
In July, for the nearest coastal location, the temperature of the sea averages around 28°C, that's 82° Fahrenheit. Our index indicates for swimming in this is considered very warm and would be enjoyed by all. With this temperature you can stay active in the water for extended periods of time without feeling uncomfortable.
YEARLY TRENDS: WEATHER AVERAGES & EXTREMES
The following charts show yearly weather trends with information on monthly weather averages and extremes.
The chart below plots the average high and low temperature for each month of the year. It also shows the maximum and minimum recorded temperatures.
The chart below plots the average monthly precipitation amount.
The chart below plots the average daily wind speed you can expect for any month. It also shows the maximum recorded sustained wind speed for each month.