Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a tropical 31.6°C (88.9°F) in August to a warm 27.3°C (81.1°F). During the month of September, Minatomachi anticipates a mean low-temperature of 20.2°C (68.4°F).Heat index
The heat index for September is evaluated at a tropical 30°C (86°F). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. 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. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Minatomachi, in September, it is raining for 12 days, with typically 34mm (1.34") of accumulated precipitation. In Minatomachi, during the entire year, the rain falls for 149 days and collects up to 436mm (17.17") of precipitation.Snowfall
In Minatomachi, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 05:31 and sunset at 18:24. On the last day of September, in Minatomachi, sunrise is at 05:52 and sunset at 17:43 JST.
Sunshine
The average sunshine in September is 9.1h.UV index
In Minatomachi, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Take precautions - Protection against sunburn is recommended. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the average September temperature in Minatomachi?
What is the average humidity in September in Minatomachi?
How many days does it rain in September in Minatomachi?
When it does not snow in Minatomachi?
What is the average length of the day in September in Minatomachi?
When are sunrise and sunset in September in Minatomachi?
How many hours of sunshine does Minatomachi have in September?
What is the UV index reading in September in Minatomachi?
Average temperature in September
Minatomachi, Japan
- Average high temperature in September: 27.3°C
The warmest month (with the highest average high temperature) is August (31.6°C).
The month with the lowest average high temperature is January (7.6°C).
- Average low temperature in September: 20.2°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in September
Minatomachi, Japan
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in September
Minatomachi, Japan
- Average wind speed in September: 7.9km/h
The windiest month (with the highest average wind speed) is January (10.6km/h).
The calmest month (with the lowest average wind speed) is June (7.8km/h).
Average humidity in September
Minatomachi, Japan
- Average humidity in September: 75%
The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Minatomachi, Japan
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is July (79mm).
The driest month (with the least rainfall) is November (20mm).
Average rainfall days in September
Minatomachi, Japan
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is May (8.7 days).
Average snowfall in September
Minatomachi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (35mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Minatomachi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Minatomachi, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days in September
Minatomachi, Japan
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (20 days).
The month with the least sunshine days is January (10.8 days).
Average UV index in September
Minatomachi, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Minatomachi, Japan
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Minatomachi, Japan
- Average visibility in September: 9km
The months with the highest visibility are February, March, November and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September and October (9km).
Minatomachi, Japan
Weather forecast for your location
2. Allow the app to use your location
