January weather forecastSleman, Indonesia

January

Weather in January

January, the same as December, is another warm summer month in Sleman, Indonesia, with an average temperature varying between 23.3°C (73.9°F) and 28.6°C (83.5°F).

Temperature

The initiation of January records an average high-temperature of a still warm 28.6°C (83.5°F), displaying a near consistency with the previous month. Throughout January, Sleman experiences a low-temperature average of 23.3°C (73.9°F).

Heat index

Throughout January, the heat index is estimated at a hot 34°C (93.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In January, the average relative humidity is 83%.

Rainfall

In Sleman, in January, it is raining for 30.3 days, with typically 209mm (8.23") of accumulated precipitation. In Sleman, during the entire year, the rain falls for 294.6 days and collects up to 1749mm (68.86") of precipitation.

Daylight

The average length of the day in January is 12h and 31min.
On the first day of the month, sunrise is at 05:24 and sunset at 17:58. On the last day of January, sunrise is at 05:38 and sunset at 18:05 WIB.

Sunshine

In January, the average sunshine is 8.6h.

UV index

The months with the lowest UV index in Sleman are January, April through September, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 6 in January translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

An average high-temperature, in January, in Sleman, is 28.6°C (83.5°F) and the average low-temperature is 23.3°C (73.9°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in January is estimated at 34°C (93.2°F).

The average relative humidity in January is 83%.

In Sleman, in January, it is raining for 30.3 days, with typically 209mm (8.23") of accumulated precipitation.

The average day length in January is 12h and 31min.

On the first day of January, sunrise is at 05:24 and sunset at 17:58. On the last day of the month, sunrise is at 05:38 and sunset at 18:05 WIB.

In Sleman, the average sunshine duration in January is 8.6h.

January, April through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index.

In January, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Sleman, Indonesia

  • Average high temperature in January: 28.6°C

The warmest month (with the highest average high temperature) is October (29.3°C).
The month with the lowest average high temperature is July (27.7°C).

  • Average low temperature in January: 23.3°C

The months with the highest average low temperature are January and November (23.3°C).
The coldest month (with the lowest average low temperature) is August (21°C).

Average pressure in January
Sleman, Indonesia

  • Average pressure in January: 1009.2mbar

The months with the highest atmospheric pressure are August and September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in January
Sleman, Indonesia

  • Average wind speed in January: 9.2km/h

The windiest month (with the highest average wind speed) is August (11.6km/h).
The calmest month (with the lowest average wind speed) is April (7km/h).

Average humidity in January
Sleman, Indonesia

  • Average humidity in January: 83%

The months with the highest relative humidity are May and June (84%).
The months with the lowest relative humidity are September and October (80%).

Average rainfall in January
Sleman, Indonesia

  • Average rainfall in January: 209mm

The wettest month (with the highest rainfall) is March (236mm).
The driest month (with the least rainfall) is August (29mm).

Average rainfall days in January
Sleman, Indonesia

  • Average rainfall days in January: 30.3 days

The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is August (13.8 days).

Average daylight in January /
Average sunshine in January
Sleman, Indonesia

  • Average daylight in January: 12h and 30min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in January: 8h and 36min

The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in January
Sleman, Indonesia

  • Average sunshine days in January: 0.4 days

The month with the most sunshine days is August (11.1 days).
The months with the least sunshine days are January and February (0.4 days).

Average UV index in January
Sleman, Indonesia

  • Average UV index in January: 6

The months with the highest UV index are February, March and October (UV index 7).
The months with the lowest UV index are January, April, May, June, July, August, September, November and December (UV index 6).

Average cloud cover in January
Sleman, Indonesia

  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July and August (Cloud cover 38).

Average visibility in January
Sleman, Indonesia

  • Average visibility in January: 9km

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