Climate and monthly weather forecastPort Mourant, Guyana
Climate and monthly weather forecast
The climate of Port Mourant
Situated in Guyana, Port Mourant has a classic Tropical rainforest climate, abbreviated as Af on the Köppen climate classification. Throughout the year, it experiences quite consistent weather patterns typical of this classification.The course of the year sees slight variations in weather parameters. The monthly average temperature swings relatively little, from a low of 24.8°C (76.6°F) to a high of 30.8°C (87.4°F). Relative humidity hovers around 80%, contributing to the consistently moist feeling in the air. Daily sunlight hours vary from 11.8 hours to 12.5 hours, while the cloud cover varies throughout the year as well.
Rainfall characterizes Port Mourant's climate, with every month of the year recording significant amounts. The wettest month is June, with a whopping 314mm (12.36") of rainfall, while the driest month is March, receiving 97mm (3.82"). Port Mourant's wind speeds range from 11.3km/h (7mph) to 16.7km/h (10.4mph), and the wind gust speeds range from 17.8km/h (11.1mph) to 24.7km/h (15.3mph). The town's consistent weather is due to its geographical location near the equator.
The best time to visit Port Mourant
The ideal time to visit Port Mourant is influenced by one's tolerance for rain and humidity. That being said, the best time to visit is typically in the months of March and September. During this period, the town experiences less rainfall, hitting a low of 97mm (3.82") and 141mm (5.55") respectively. Additionally, these months boast relatively reasonable humidity levels and temperature highs of 28.4°C (83.1°F) and 30.8°C (87.4°F), generating more comfortable conditions for outdoor activities.The worst time to visit Port Mourant
The worst time to visit Port Mourant is arguably during the high-rainfall months, which is from May to July. These months present not only the highest rainfall amounts, spanning from 285mm (11.22") to 314mm (12.36"), but also the highest number of rainy days, exceeding 28 days each month. For travelers who prefer a drier climate, these months could prove challenging.Spring weather in Port Mourant
Port Mourant exhibits nearly identical weather conditions year-round, rather than typical seasonal variations. Thus, the term 'spring' is more associated with the calendar month than any change in weather. In 'spring', specifically March to May, average temperatures ascend slightly from 28°C (82.4°F) to 28.8°C (83.8°F). Rainfall increases drastically from 97mm (3.82") in March to a substantial 285mm (11.22") in May. There is also a slight decrease in sunshine hours and an increase in humidity over this period.Summer weather in Port Mourant
Typically, the summer months in Port Mourant, from June to August, are characterized by increasing daily sunshine hours and a dip in relative humidity from 82% to 78%. However, it's the town's wettest period, with monthly rainfall exceeding 300mm (11.81") in June and July. Despite the rain, average temperatures stay consistent, ranging from 28.8°C (83.8°F) to 30.3°C (86.5°F).Autumn weather in Port Mourant
From September to November, or the 'autumn' period, Port Mourant sees a significant fall in rainfall, from 229mm (9.02") in September to 133mm (5.24") in November. Temperatures hover between 30.8°C (87.4°F) and 30.2°C (86.4°F), maintaining warm conditions. Sunshine hours per day start to decrease, while the relative humidity tends to rise slightly.Winter weather in Port Mourant
The final months of the year, recognized as the 'winter' period, despite the tropical climate, Port Mourant experiences a slight rebound in rainfall with December reaching 208mm (8.19"). Temperatures drop marginally from November to stand between 30.2°C (86.4°F) in December to 28°C (82.4°F) by February. Despite the increase in rainfall, the daily sunshine hours remain constant and humidity remains reasonably high.Weather in January
January, the first month of the year in Port Mourant, comes with a trifecta of warmth, relative humidity, and showers. A typical picture features a characteristically wet season, bringing backyard crickets their much-needed humidity. Weather in January »Weather in February
The woolly weather of January gradually fades into the background, making way for the balmy February in Port Mourant. In terms of visibility, the weather often presents a glimpse into the natural beauty and charm of this picturesque Guyanese town. Weather in February »Weather in March
As February transitions into March in Port Mourant, the transformation seems inconsequential. A palpable decrease from the February's 129mm (5.08") to March's 97mm (3.82") of rainfall becomes the hallmark for this month. The daily humdrum gains a rhythm with the reduced rain showers, resulting in increased outdoor work and play. Weather in March »Weather in April
The gentle transition from March ushers in April in Port Mourant. Unpredictably, alternating weather patterns make a mark with rainfall increasing dramatically to 138mm (5.43"). Besides, the increasing daylight allows the town's inhabitants to spend more time outdoors, benefiting from the additional sunshine hours. Weather in April »Weather in May
As May arrives in Port Mourant with increased warmth, extended daylight, and added rainfall, outdoor activities become vibrant and diverse. A significant leap in rainfall to 285mm (11.22") champions the return of the much-anticipated rainy season. Weather in May »Weather in June
June in Port Mourant is reminiscent of May but with uniquely charming characteristics. Most recognizable is the peak of the rainy season, emblemized by the maximum rainfall of 314mm (12.36"). Amidst the copious rains, residents match their pace with nature, tuning in to the rhythmic raindrops. Weather in June »Weather in July
With July, the town witnesses a decline in rainfall and wind speed, indicating a fleeting respite from the lengthy wet season in Port Mourant. However, the most noteworthy development is the mercury soaring to a remarkable 30.3°C (86.5°F), marking July as the warmest month. Weather in July »Weather in August
Port Mourant welcomes August with fewer rain showers, warmer days predicted by the highest recorded temperature of 30.8°C (87.4°F), and a general feeling of well-being. The weather carries an aura of delight, with the residents decoding the tales of the cloudless skies. Weather in August »Weather in September
In September, as the rain retreats, the passage from the wet to the dry season in Port Mourant manifests itself subtly. The rainfall declines to its yearly low of 141mm (5.55"), signaling the slow farewell of the rainy days. The temperature remains consistent, eliminating any chances of heat-induced discomfort. Weather in September »Weather in October
Come October, and Port Mourant seems set for an exceptional weather transition phase. The continuation from September’s decreased rainfall and moderate temperatures rules the weather trends. The dried and warmed landscapes, having soaked hours of sunlight, carry a charm unique to this time of the year. Weather in October »Weather in November
November in Port Mourant signals a revival of the wet season, making its presence felt through increased rainfall. The weather is marked by a substantial rise in rainfall from the October's 133mm (5.24") to November's 197mm (7.76"). Weather in November »Weather in December
Lastly, December in Port Mourant comes bearing a mixed bag of weather elements. On one hand, the persistent rain intensifies, with the amount reaching 208mm (8.19"). On the other, the clement temperature, paired with ample sunshine hours, makes way for extensive outdoor activities. Weather in December »Updated: Feb 19, 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
Port Mourant's lowest temperatures tend to occur in January and February, with an average high-temperature of 28°C (82.4°F).
Throughout the year, in Port Mourant, there are 312.6 rainfall days, and 2298mm (90.47") of precipitation is accumulated.
January, February, April, June through December, with an average maximum UV index of 7, are months with the highest UV index.
The month with the least rainfall is March, when the rain falls for 24.4 days and typically collects 97mm (3.82") of precipitation.
The months with the lowest UV index in Port Mourant, Guyana, are March and May, with an average maximum UV index of 6.
With an average of 7h of sunshine, April has the least sunshine of the year in Port Mourant, Guyana.
June is the most humid month in Port Mourant, Guyana, with an average relative humidity of 82%.
June is the month with the most rainfall in Port Mourant, Guyana. Rain falls for 28.8 days and accumulates 314mm (12.36") of precipitation.
With an average of 12h and 30min of daylight, June has the longest days of the year in Port Mourant.
In Port Mourant, September is the month with the highest recorded average temperatures, measuring a high of 30.8°C (87.4°F) and a low of 25.9°C (78.6°F).
The least humid month is September, with an average relative humidity of 76%.
The month with the most sunshine in Port Mourant, Guyana, is September, with an average of 9.3h of sunshine.
With an average of 11h and 48min of daylight, December has the shortest days of the year in Port Mourant.
Port Mourant, Guyana, does not observe Daylight Saving Time (DST). -04 timezone is used over the entire year.
Average temperature
Port Mourant, Guyana
The warmest month (with the highest average high temperature) is September (30.8°C).
The months with the lowest average high temperature are January and February (28°C).
The months with the highest average low temperature are September and October (25.9°C).
The coldest months (with the lowest average low temperature) are January, February and July (24.8°C).
Average pressure
Port Mourant, Guyana
- Average pressure in January:
1012.1mbar - Average pressure in February:
1012mbar - Average pressure in March:
1012.1mbar - Average pressure in April:
1012mbar - Average pressure in May:
1012.2mbar - Average pressure in June:
1012.9mbar
- Average pressure in July:
1012.8mbar - Average pressure in August:
1012.2mbar - Average pressure in September:
1011.4mbar - Average pressure in October:
1010.1mbar - Average pressure in November:
1009.4mbar - Average pressure in December:
1010.9mbar
The month with the highest atmospheric pressure is June (1012.9mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed
Port Mourant, Guyana
- Average wind speed in January:
15.7km/h - Average wind speed in February:
16.6km/h - Average wind speed in March:
16.7km/h - Average wind speed in April:
16km/h - Average wind speed in May:
15.1km/h - Average wind speed in June:
13km/h
- Average wind speed in July:
11.3km/h - Average wind speed in August:
11.9km/h - Average wind speed in September:
13.6km/h - Average wind speed in October:
14.5km/h - Average wind speed in November:
14.8km/h - Average wind speed in December:
15.7km/h
The windiest month (with the highest average wind speed) is March (16.7km/h).
The calmest month (with the lowest average wind speed) is July (11.3km/h).
Average humidity
Port Mourant, Guyana
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is September (76%).
Average rainfall
Port Mourant, Guyana
- Average rainfall in January:
126mm - Average rainfall in February:
129mm - Average rainfall in March:
97mm - Average rainfall in April:
138mm - Average rainfall in May:
285mm - Average rainfall in June:
314mm
- Average rainfall in July:
301mm - Average rainfall in August:
229mm - Average rainfall in September:
141mm - Average rainfall in October:
133mm - Average rainfall in November:
197mm - Average rainfall in December:
208mm
The wettest month (with the highest rainfall) is June (314mm).
The driest month (with the least rainfall) is March (97mm).
Average rainfall days
Port Mourant, Guyana
- Average rainfall days in January:
24.8 days - Average rainfall days in February:
24.3 days - Average rainfall days in March:
24.4 days - Average rainfall days in April:
24.8 days - Average rainfall days in May:
28.1 days - Average rainfall days in June:
28.8 days
- Average rainfall days in July:
29.9 days - Average rainfall days in August:
28 days - Average rainfall days in September:
24.5 days - Average rainfall days in October:
23.5 days - Average rainfall days in November:
24.1 days - Average rainfall days in December:
27.4 days
The month with the highest number of rainy days is July (29.9 days).
The month with the least rainy days is October (23.5 days).
Average daylight / Average sunshine
Port Mourant, Guyana
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 24min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 12min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 48min - Average daylight in December:
11h and 48min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in January:
7h and 54min - Average sunshine in February:
7h and 6min - Average sunshine in March:
7h and 12min - Average sunshine in April:
7h and 0min - Average sunshine in May:
7h and 18min - Average sunshine in June:
7h and 54min
- Average sunshine in July:
8h and 18min - Average sunshine in August:
8h and 48min - Average sunshine in September:
9h and 18min - Average sunshine in October:
8h and 54min - Average sunshine in November:
8h and 36min - Average sunshine in December:
7h and 48min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is April (Average sunshine: 7h and 0min).
Average sunshine days
Port Mourant, Guyana
- Average sunshine days in January:
3.2 days - Average sunshine days in February:
1.5 days - Average sunshine days in March:
1.8 days - Average sunshine days in April:
2.2 days - Average sunshine days in May:
1.3 days - Average sunshine days in June:
0.4 days
- Average sunshine days in July:
0.3 days - Average sunshine days in August:
1.5 days - Average sunshine days in September:
3.4 days - Average sunshine days in October:
5 days - Average sunshine days in November:
4.6 days - Average sunshine days in December:
1.6 days
The month with the most sunshine days is October (5 days).
The month with the least sunshine days is July (0.3 days).
Average UV index
Port Mourant, Guyana
The months with the highest UV index are January, February, April, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are March and May (UV index 6).
Average cloud cover
Port Mourant, Guyana
The months with the most cloud cover are February and April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 24).
Average visibility
Port Mourant, Guyana
The months with the highest visibility are January, February, March, April, September, October and December (10km).
The months with the lowest visibility are May, June, July, August and November (9km).
