Country Overview For Guatemala
The climate in Guatemala is typically tropical; hot, humid in lowlands; cooler in highlands. The terrain: mostly mountains with narrow coastal plains and rolling limestone plateau. For Guatemala City in January the daily average maximum temperatures is 33°C with the average minimum 22°C, while in June the average maximum is 32°C with a minimum of 24°C. The wettest month for Guatemala City is May with an average of 19.4mm of precipitation falling while the driest month is January with 0.0mm falling.
HISTORICAL MONTHLY AVERAGES FOR SEPTEMBER
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 San Jose.
Throughout the month of September daytime temperatures will generally reach highs of around 32°C that's about 89°F. At night the average minimum temperature drops down to around 23°C, that's 73°F.
In recent times the highest recorded temperature in September has been 37°C that's 98°F, with the lowest recorded temperature 14°C, about 56°F.
The average daily relative humidity for September is around 84%.
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 you can expect dangerous heat conditions. Sunstroke, muscle cramps and heat exhaustion are likely. Heatstroke is possible with prolonged exposure and/or physical activity (see heat index for more information).
The average monthly amount of precipitation has been recorded at around 293 mm, that's 12 inches. Throughout the month you can expect to see rain or drizzle falling on 12 days of the month, with snow falling on 1 days.
The average daily wind speed in September has been around 5 km/h, that’s the equivalent to about 3 mph, or 3 knots. In recent years the maximum sustained wind speed has reached 69 km/h, that’s the equivalent of around 43 mph, or 37 knots.
On average the month of September is not affected by foggy conditions.
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 number of days in any month that you can expect to see rain falling.
The chart below plots the average number of days in any month that you can expect to see snow falling.
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.