Climate and monthly weather forecastBukit Mertajam, Malaysia
Climate and monthly weather forecast
The climate of Bukit Mertajam
Bukit Mertajam, Malaysia, belongs to the Af - Tropical rainforest climate category under the Köppen climate classification. This implies a predominantly hot and humid climate throughout the year, characterized by consistent temperatures and abundant rainfall.The annual temperature fluctuates slightly, ranging from a high of 32.7°C (90.9°F) in February to a low of 30.6°C (87.1°F) in December. Similarly, the night temperatures vary mildly over the year, with the highest being 24.8°C (76.6°F) from April to May and the lowest 22.9°C (73.2°F) recorded in January. This small variation underscores the region's consistently warm tropical climate.
For humidity, Bukit Mertajam maintains high levels year-round indicative of a tropical rainforest, from a low of 77% to a high of 83%. This consistently high humidity creates a muggy and moist environment typical of such climates.
Rainfall is a prevalent part of Bukit Mertajam's weather with the wettest month being November with 169mm (6.65") of rain, while the driest month sees 64mm (2.52") in February. The number of rainy days also varies from 18.2 days in February to 28.2 days in November.
Looking at sunlight hours, there is a minimal fluctuation from a maximum of 12.4 hours from May to July, to a minimum of 11.8 hours in January and December. This consistently long duration of daylight envelopes Bukit Mertajam in bright sunlight for most of the day.
Observations reveal unique weather patterns, such as in cloud cover which heightens from 31% in February to 49% in November, creating an evolving visual spectacle in the sky.
The best time to visit Bukit Mertajam
To maximize outdoor activities, February is the optimal month to visit Bukit Mertajam. It's the driest month with just 64mm (2.52") of rain over 18.2 days, and also holds the highest average temperature of 32.7°C (90.9°F). Coupled with the lowest cloud cover at 31% and strong visibility of 9km (5.6mi), it facilitates clear sightseeing and exploration days.The worst time to visit Bukit Mertajam
Avoid planning visits in November, as it experiences the most rainfall of 169mm (6.65") over 28.2 days, making outdoor explorations challenging. It's also the month with the highest cloud cover at 49% and the highest humidity levels of 83%, leading to a cloudy, damp and humid environment.Spring weather in Bukit Mertajam
Spring in Bukit Mertajam from March to May exhibits consistent weather, with high temperatures ranging from 32.3°C (90.1°F) to 32.5°C (90.5°F) and nighttime lows oscillating from 23.8°C (74.8°F) to 24.8°C (76.6°F). Rainfall distribution during this period varies from 95mm (3.74") in March to 127mm (5") in May, with a gradual increase in rainy days.Summer weather in Bukit Mertajam
Between June and August, Bukit Mertajam experiences a relatively stable tropical weather where highs hover between 32.6°C (90.7°F) and 32.2°C (90°F). Rainfall averages are from 77mm (3.03") in June to 107mm (4.21") in August, while the number of rainy days peaks at 24.3 days in August.Autumn weather in Bukit Mertajam
The autumn months of September to November witness a spike in rainfall with 105mm (4.13") in September, increasing progressively to reach a maximum of 169mm (6.65") in November. Temperatures remain reasonably constant, varying from a high of 31.5°C (88.7°F) in September and November, to a low of 23.5°C (74.3°F) to 23.6°C (74.5°F).Winter weather in Bukit Mertajam
Winter in Bukit Mertajam, taking place in December, records the lowest average maximum temperature of the year at 30.6°C (87.1°F). Rainfall decreases slightly to a total of 122mm (4.8") and the number of rainy days falls slightly to 27.4 days in the month. The temperature dips slightly to 23.4°C (74.1°F) at night, implying warm yet comfortable nights.Weather in January
January is the start of the new year with a characteristically humid climate in Bukit Mertajam, Malaysia. Rain occurrence is notable, but it drops slightly from 122mm (4.8") in December to 74mm (2.91"), lending a drier feeling to the surroundings. Weather in January »Weather in February
Come February, the Bukit Mertajam weather takes a twist gear with dominant sunny days and a fall in humidity levels from 80% in January to 77%. Sunlight hours increase by a small margin to 12 hours, signifying the onset of longer days. Weather in February »Weather in March
As March arrives, the amount of rainfall ramps up from February's 64mm (2.52") to March's 95mm (3.74"). A time of change, the city of Bukit Mertajam experiences longer daylight hours, offering residents more time to explore and enjoy the outdoors. Weather in March »Weather in April
The month of April in Bukit Mertajam is characterized by a significant increase in rainfall from 95mm (3.74") in March to 139mm (5.47"). The amount of daylight received persists at 12.2 hours, similar to March. The weather is predominantly rainy, often dampening the surroundings. Weather in April »Weather in May
May weather in Bukit Mertajam, Malaysia presents a lower rainfall quantity, dropping to 127mm (5") from April's 139mm (5.47"). Meanwhile, the pattern of high temperatures continues unabated, lending the city its tropical vibe. The conclusion of the month sees an increase in daylight hours to 12.4 hours, offering ample opportunities for outdoor activities. Weather in May »Weather in June
In June, Bukit Mertajam witnesses fewer rainfall days pitching down from 26.6 in May to 20.6 in June. This reduction is a warm welcome for locals and tourists alike anticipating outdoor excursions. Despite this, the persistent high temperatures render the overall climate humid. Weather in June »Weather in July
The month of July in Bukit Mertajam stays consistent with June in terms of high temperatures and relatively high rainfall. The quantity of rainfall, however, rises to 97mm (3.82"), signaling the commencement of the rainy season. As the month progresses, the showers interspersed with warm, sunny days maintain an overall pleasant weather. Weather in July »Weather in August
August presents an increase in rainfall from 97mm (3.82") in July to 107mm (4.21"), marking the peak of the wet season in Bukit Mertajam. Despite this, the city carries a warm and humid atmosphere throughout the month. The sunlight hours exhibit a slight decrease from July, yet offering adequate time for outdoor activities. Weather in August »Weather in September
As September rolls in, Bukit Mertajam perseveres under the high temperatures and continues to experience a shower-prone climate with rainfall registering 105mm (4.13"). The city spends most of its time under cloud cover, hinting towards the impending monsoon season. Weather in September »Weather in October
October in Bukit Mertajam represents the brunt of the monsoon season with the rainfall lengthening from September's 105mm (4.13") to October's 149mm (5.87"), marking the month with the maximum rainfall. The city gets drenched in frequent showers throughout the day. Weather in October »Weather in November
The weather in Bukit Mertajam in November shows no sign of backing down with rain-filled days, yet the rainfall does drop from October's 149mm (5.87") to November's 169mm (6.65"). The city continues to experience shorter daylight hours with a looming tendency towards cooler nights. Weather in November »Weather in December
In December, Bukit Mertajam is characterized by a decrease in rainfall from November's hefty 169mm (6.65") to December's 122mm (4.8"). The city commemorates the end of the monsoon season as rainfall decreases, paving the way for cheerier days. Weather in December »Updated: Aug 11, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 294.8 rainfall days, and 1325mm (52.17") of precipitation is accumulated.
January is the month with the coldest seawater, with an average sea temperature of 28.7°C (83.7°F).
January through October, with an average maximum UV index of 7, are months with the highest UV index.
February, marked by an average high-temperature of 32.7°C (90.9°F) and a low-temperature of 23°C (73.4°F), is the warmest month.
The months with the lowest humidity are February, June through August, with an average relative humidity of 77%.
The month with the least rainfall is February, when the rain falls for 18.2 days and typically collects 64mm (2.52") of precipitation.
February has the most sunshine of the year in Bukit Mertajam, with an average of 9.1h of sunshine.
With an average sea temperature of 30.5°C (86.9°F), May is the month with the warmest seawater.
The month with the longest days is June, with an average of 12h and 24min of daylight.
The months with the highest humidity are November and December, with an average relative humidity of 83%.
November is the month with the most rainfall. Rain falls for 28.2 days and accumulates 169mm (6.65") of precipitation.
With an average of 7.4h of sunshine, November has the least sunshine of the year.
November and December, with an average maximum UV index of 6, are months with the lowest UV index.
In Bukit Mertajam, the average lowest temperatures are observed in December, with a high of 30.6°C (87.1°F) and a low of 23.4°C (74.1°F).
December has the shortest days of the year, with an average of 11h and 48min of daylight.
Bukit Mertajam does not utilize Daylight Saving Time (DST). +08 timezone is used throughout the entire year.
Average temperature
Bukit Mertajam, Malaysia
The warmest month (with the highest average high temperature) is February (32.7°C).
The month with the lowest average high temperature is December (30.6°C).
The months with the highest average low temperature are April and May (24.8°C).
The coldest month (with the lowest average low temperature) is January (22.9°C).
Average pressure
Bukit Mertajam, Malaysia
- Average pressure in January:
1010.6mbar - Average pressure in February:
1010.5mbar - Average pressure in March:
1010.2mbar - Average pressure in April:
1009.5mbar - Average pressure in May:
1008.9mbar - Average pressure in June:
1008.9mbar
- Average pressure in July:
1009mbar - Average pressure in August:
1009.3mbar - Average pressure in September:
1009.9mbar - Average pressure in October:
1009.9mbar - Average pressure in November:
1009.3mbar - Average pressure in December:
1009.9mbar
The month with the highest atmospheric pressure is January (1010.6mbar).
The months with the lowest atmospheric pressure are May and June (1008.9mbar).
Average wind speed
Bukit Mertajam, Malaysia
- Average wind speed in January:
5.7km/h - Average wind speed in February:
5.6km/h - Average wind speed in March:
5.4km/h - Average wind speed in April:
5km/h - Average wind speed in May:
5.1km/h - Average wind speed in June:
5.3km/h
- Average wind speed in July:
5.5km/h - Average wind speed in August:
5.4km/h - Average wind speed in September:
5.2km/h - Average wind speed in October:
5.1km/h - Average wind speed in November:
4.8km/h - Average wind speed in December:
5.4km/h
The windiest month (with the highest average wind speed) is January (5.7km/h).
The calmest month (with the lowest average wind speed) is November (4.8km/h).
Average humidity
Bukit Mertajam, Malaysia
The months with the highest relative humidity are November and December (83%).
The months with the lowest relative humidity are February, June, July and August (77%).
Average rainfall
Bukit Mertajam, Malaysia
- Average rainfall in January:
74mm - Average rainfall in February:
64mm - Average rainfall in March:
95mm - Average rainfall in April:
139mm - Average rainfall in May:
127mm - Average rainfall in June:
77mm
- Average rainfall in July:
97mm - Average rainfall in August:
107mm - Average rainfall in September:
105mm - Average rainfall in October:
149mm - Average rainfall in November:
169mm - Average rainfall in December:
122mm
The wettest month (with the highest rainfall) is November (169mm).
The driest month (with the least rainfall) is February (64mm).
Average rainfall days
Bukit Mertajam, Malaysia
- Average rainfall days in January:
23.2 days - Average rainfall days in February:
18.2 days - Average rainfall days in March:
23.7 days - Average rainfall days in April:
26.9 days - Average rainfall days in May:
26.6 days - Average rainfall days in June:
20.6 days
- Average rainfall days in July:
22.6 days - Average rainfall days in August:
24.3 days - Average rainfall days in September:
25.6 days - Average rainfall days in October:
27.5 days - Average rainfall days in November:
28.2 days - Average rainfall days in December:
27.4 days
The month with the highest number of rainy days is November (28.2 days).
The month with the least rainy days is February (18.2 days).
Average sea temperature
Bukit Mertajam, Malaysia
The best month for swimming (with the highest average sea temperature) is May (30.5°C).
The coldest month (with the lowest average sea temperature) is January (28.7°C).
Average daylight / Average sunshine
Bukit Mertajam, Malaysia
- Average daylight in January:
11h and 54min - Average daylight in February:
12h and 0min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 12min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 24min
- Average daylight in July:
12h and 24min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 54min - Average daylight in December:
11h and 48min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in January:
8h and 30min - Average sunshine in February:
9h and 6min - Average sunshine in March:
8h and 54min - Average sunshine in April:
8h and 42min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
8h and 42min - Average sunshine in August:
8h and 30min - Average sunshine in September:
8h and 30min - Average sunshine in October:
8h and 0min - Average sunshine in November:
7h and 24min - Average sunshine in December:
7h and 54min
The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days
Bukit Mertajam, Malaysia
- Average sunshine days in January:
5.8 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
4.4 days - Average sunshine days in April:
1.5 days - Average sunshine days in May:
2.7 days - Average sunshine days in June:
5.2 days
- Average sunshine days in July:
5 days - Average sunshine days in August:
2.6 days - Average sunshine days in September:
1.9 days - Average sunshine days in October:
1.9 days - Average sunshine days in November:
1 days - Average sunshine days in December:
2.1 days
The month with the most sunshine days is February (7.8 days).
The month with the least sunshine days is November (1 days).
Average UV index
Bukit Mertajam, Malaysia
The months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are November and December (UV index 6).
Average cloud cover
Bukit Mertajam, Malaysia
The month with the most cloud cover is November (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility
Bukit Mertajam, Malaysia
The months with the highest visibility are January, February, March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are November and December (8km).
