Climate and monthly weather forecastRockstone, Guyana
Climate and monthly weather forecast
The climate of Rockstone
Belonging to the Af climate group under the Köppen climate classification, Rockstone in Guyana is predominantly a tropical rainforest destination. Basking in its geographical position close to the equator, the location witnesses minimal variations with temperature but carries a substantial amount of rainfall all year round.Throughout the entire year, the temperature maintains a relatively steady level, fluctuating only minimally. The highest average temperature is typically around 33.1°C (91.6°F) in September while the lowest monthly average can go down to 21.8°C (71.2°F) in January. Even at the peak of the fluctuation, the temperature variation remains modest, signifying highly consistent tropical warmth in the town of Rockstone.
One of the distinguishing features of the climate in Rockstone is the significant rainfall experienced year-round. The sodden months of May and June register the highest levels of precipitation, touching 167mm (6.57") and 148mm (5.83") respectively, with the driest period witnessed in September recording 55mm (2.17") of rain. This consistent level of rainfall further underlines the predominance of a tropical rainforest climate.
Another fascinating characteristic regarding Rockstone's weather is the uniformity in daylight hours. Each month receives an average of 12 daylight hours, with March bagging the highest at 12.5 hours and November recording the least at 11.8 hours. The town also experiences a cloud cover percentage varying between 50% in the initial part of the year to dropping down to 31% in September.
The best time to visit Rockstone
Tourists favor the period between January to March when the average rainfall is relatively less with values ranging from 62mm (2.44") to 95mm (3.74"). For sun-seekers, the most copious sunshine hours can be enjoyed over the months from July to September with an impressive 9 to 10.6 hours of daily sunshine.The worst time to visit Rockstone
Visitors might find the months of May and June rather sodden, given the high level of precipitation registering 167mm (6.57") and 148mm (5.83") respectively. Despite the charm of the tropical rainforest, these months can be challenging for outdoor pursuits due to high rainfall days and relatively lesser sunshine.Spring weather in Rockstone
March through May, denoting spring in Rockstone, boast of relatively warmer temperatures ranging between 30.3°C (86.5°F) to 30.5°C (86.9°F). Notably, May experiences the highest rainfall of the year at 148mm (5.83"), which may appeal to visitors intrigued by the lush, tropical landscape.Summer weather in Rockstone
In line with its tropical personality, the summer months from June to August in Rockstone delivers warm temperatures hovering from 30.2°C (86.4°F) to 32.2°C (90°F). However, rainfall remains relatively high during these months at an average of 122mm (4.8"), despite them being considered summer.Autumn weather in Rockstone
Autumn, characterized by the months from September to November, marks the period with the warmest temperature of the year. Expect temperatures to dance between 32.9°C (91.2°F) and 31.5°C (88.7°F). Interestingly, September shows the lowest rainfall of the year at 55mm (2.17"), followed by a noticeable increase over the next two months.Winter weather in Rockstone
Rockstone's winter, observed from December to February, is mildly cooler with temperatures ranging from 29.3°C (84.7°F) to 29.9°C (85.8°F). Notably, rainfall peaks at 138mm (5.43") in December, followed by a considerable tapering off to 79mm (3.11") in February, suggesting a possibly wet start to the year.Weather in January
The beginning of the new year starts in Rockstone, Guyana with tropical climate conditions reflecting the typical high humidity and rainfall. The temperature continues to sit on the warmer side, similar to the month that preceded it. Weather in January »Weather in February
The weather pattern in February follows closely with that of January, featuring warm temperatures and high humidity. Now, Rockstone prepares itself for the tropical rain that February brings, a slight decrease from the previous month's downpours. Weather in February »Weather in March
March signals the onset of slight changes with the temperature and humidity prominently showcasing tropical characteristics. The weather reveals signs of transition with warmer temperatures and decreasing rainfall. A clear indication of summer slowly stepping in is the rise in temperature, with the highest reaching as far as 30.3°C (86.5°F). Weather in March »Weather in April
April welcomes an escalation in the heat as Rockstone, Guyana gets immersed in the throes of tropical climate. Although April features higher temperatures, cloud coverage and regular rainfall often bring about refreshing respites. Weather in April »Weather in May
May represents the mid-year mark in Rockstone, Guyana with the highest precipitation received throughout the year. The month witnesses further elevation in temperature and humidity, which is synonymous with the ongoing tropical weather. Weather in May »Weather in June
June continues the trend of warm temperatures and high humidity. However, the hallmark of the month is the remarkable intensity of the sunlight, which is a pronounced feature of this month. June is enveloped with relatively stable weather conditions, garnering a degree of predictability for both tourists and locals in Rockstone. Weather in June »Weather in July
In Rockstone, July marks an interesting shift in weather patterns. The month, although associated with tropical climate conditions, also embodies the peak of the sunshine with an average of 9.6 hours per day. Rainfall shows a significant dip to 118mm (4.65") contrasting with the preceding months, which dramatically alters the appearance of the landscape. Weather in July »Weather in August
August in Rockstone kicks off with temperature highs reaching up to 32.2°C (90°F). Apart from the continually oppressive heat, the greatest attraction is undoubtedly its sunlight. With an increase in daylight hours, August is marked by lush green views illuminated by the golden rays. Weather in August »Weather in September
Rockstone's September continues to surprise with its series of climatic variations. The month witnesses slight increments in the mercury levels, but nothing too drastic from its preceding counterparts. Yet, the record-breaking temperatures hold at 33.1°C (91.6°F), indicating September as the hottest month in Rockstone. Weather in September »Weather in October
The season's transition is evident in October with the temperatures starting to decline, signaling the arrival of cooler conditions. The weather pattern leans towards the drier side with rainfall dwindling down to 85mm (3.35"), almost half of what is usually experienced during the peak monsoon. Weather in October »Weather in November
November welcomes the residents of Rockstone with a seasonal shift. The month ushers in a decline in temperature, which is a definite respite from the heat endured in the previous months. As November progresses, the city is graced by an increase in rainfall surging to a substantial 137mm (5.39"). Weather in November »Weather in December
The city of Rockstone is wrapped in a humid cover as the year nears its end in December. However, the weather begins to cools off with temperatures now ranging between 22.4°C (72.3°F) and 29.9°C (85.8°F). Rainfall reaches a high of 138mm (5.43"), indicating a healthy inflow that is typical for the month. 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
January is the month that records the lowest temperatures, with averages ranging from a high of 29.3°C (84.7°F) to a low of 21.8°C (71.2°F).
Throughout the year, in Rockstone, there are 312.9 rainfall days, and 1254mm (49.37") of precipitation is accumulated.
The month with the least sunshine in Rockstone is January, with an average of 6h of sunshine.
The months with the lowest UV index in Rockstone, Guyana, are January, February, May, June and December, with an average maximum UV index of 6.
March, April, July through November, with an average maximum UV index of 7, are months with the highest UV index in Rockstone.
The most humid month is June, with an average relative humidity of 85%.
The month with the most rainfall in Rockstone, Guyana, is June, when the rain falls for 28.3 days and typically aggregates up to 167mm (6.57") of precipitation.
The month with the longest days in Rockstone, Guyana, is June, with an average of 12h and 30min of daylight.
With an average of 10.6h of sunshine, August has the most sunshine of the year.
The highest temperatures in Rockstone, Guyana, are recorded in September, with averages reaching a high of 33.1°C (91.6°F) and a low of 22.9°C (73.2°F).
The months with the lowest humidity in Rockstone, Guyana, are September and October, with an average relative humidity of 78%.
The month with the least rainfall in Rockstone is September, when the rain falls for 21 days and typically collects 55mm (2.17") of precipitation.
With an average of 11h and 48min of daylight, December has the shortest days of the year.
Rockstone, Guyana, does not utilize Daylight Saving Time (DST). -04 timezone is used throughout the entire year.
Average temperature
Rockstone, Guyana
The warmest month (with the highest average high temperature) is September (33.1°C).
The month with the lowest average high temperature is January (29.3°C).
The month with the highest average low temperature is October (23.5°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).
Average pressure
Rockstone, Guyana
- Average pressure in January:
1012.6mbar - Average pressure in February:
1012.5mbar - Average pressure in March:
1012.5mbar - Average pressure in April:
1012.4mbar - Average pressure in May:
1012.6mbar - Average pressure in June:
1013.3mbar
- Average pressure in July:
1013.1mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1011.6mbar - Average pressure in October:
1010.4mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1011.4mbar
The month with the highest atmospheric pressure is June (1013.3mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed
Rockstone, Guyana
- Average wind speed in January:
6.3km/h - Average wind speed in February:
6.8km/h - Average wind speed in March:
7.3km/h - Average wind speed in April:
7.2km/h - Average wind speed in May:
6.7km/h - Average wind speed in June:
5.8km/h
- Average wind speed in July:
5.1km/h - Average wind speed in August:
5.1km/h - Average wind speed in September:
5.8km/h - Average wind speed in October:
6km/h - Average wind speed in November:
5.8km/h - Average wind speed in December:
6km/h
The windiest month (with the highest average wind speed) is March (7.3km/h).
The calmest months (with the lowest average wind speed) are July and August (5.1km/h).
Average humidity
Rockstone, Guyana
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are September and October (78%).
Average rainfall
Rockstone, Guyana
- Average rainfall in January:
95mm - Average rainfall in February:
79mm - Average rainfall in March:
62mm - Average rainfall in April:
88mm - Average rainfall in May:
148mm - Average rainfall in June:
167mm
The wettest month (with the highest rainfall) is June (167mm).
The driest month (with the least rainfall) is September (55mm).
Average rainfall days
Rockstone, Guyana
- Average rainfall days in January:
27.7 days - Average rainfall days in February:
26.6 days - Average rainfall days in March:
27.3 days - Average rainfall days in April:
27.4 days - Average rainfall days in May:
28.8 days - Average rainfall days in June:
28.3 days
- Average rainfall days in July:
26.9 days - Average rainfall days in August:
20.8 days - Average rainfall days in September:
21 days - Average rainfall days in October:
23.2 days - Average rainfall days in November:
25.8 days - Average rainfall days in December:
29.1 days
The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is August (20.8 days).
Average daylight / Average sunshine
Rockstone, 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 54min - 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:
6h and 0min - Average sunshine in February:
7h and 0min - Average sunshine in March:
7h and 42min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 12min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 0min - Average sunshine in October:
8h and 6min - Average sunshine in November:
7h and 42min - Average sunshine in December:
6h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days
Rockstone, Guyana
- Average sunshine days in January:
1.3 days - Average sunshine days in February:
1 days - Average sunshine days in March:
1.7 days - Average sunshine days in April:
1.2 days - Average sunshine days in May:
0.7 days - Average sunshine days in June:
0.8 days
- Average sunshine days in July:
3.3 days - Average sunshine days in August:
8.5 days - Average sunshine days in September:
6.2 days - Average sunshine days in October:
5.2 days - Average sunshine days in November:
1.6 days - Average sunshine days in December:
0.3 days
The month with the most sunshine days is August (8.5 days).
The month with the least sunshine days is December (0.3 days).
Average UV index
Rockstone, Guyana
The months with the highest UV index are March, April, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, May, June and December (UV index 6).
Average cloud cover
Rockstone, Guyana
The month with the most cloud cover is May (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility
Rockstone, Guyana
The months with the highest visibility are March and April (9km).
The months with the lowest visibility are June and July (7km).
