Climate and monthly weather forecastLao Cai, Vietnam
Climate and monthly weather forecast
The climate of Lao Cai
Situated in the northern region of Vietnam, Lao Cai experiences a Tropical Monsoon climate, as categorized by the Köppen climate classification. This type of climate exhibits heavy rainfalls during the summer months and a cooler, drier period during the winter.Throughout the year, Lao Cai's temperatures show relatively mild fluctuations, with high temperatures ranging from 20.3°C (68.5°F) to 32.2°C (90°F) and low temperatures ranging from 9.3°C (48.7°F) to 21.5°C (70.7°F). The warmest months are generally May through September, with August exhibiting the highest average temperature of 31.6°C (88.9°F). Conversely, the coolest temperatures are typically recorded in January with a high of 20.3°C (68.5°F) and a low of 9.3°C (48.7°F).
Rainfall in Lao Cai varies significantly across the year. August has the heaviest precipitation, with an average of 141mm (5.55") to 169mm (6.65") of rainfall, whereas the driest months are from December to February, with December showing a minimal average of 26mm (1.02"). The relative humidity ranges from 60%\ to 78% with the period of May to July being the most humid.
One of the unique features of Lao Cai's climate is the high number of rainy days. There are over 24 rainy days a month from May to August, with July experiencing the highest number at 27.7 days on average.
The best time to visit Lao Cai
To avoid the rainy season and still enjoy warm temperatures, it would be most suitable to visit Lao Cai between April and May. During this period, the temperature averages from 28.8°C (83.8°F) to 32.2°C (90°F) and the rainfall remains relatively low at just around 23mm (0.91") to 48mm (1.89"). Sightseers will be able to enjoy clear and sunny days with an average of 9.1 hours to 10.8 hours of sunshine per day.The worst time to visit Lao Cai
Visitors looking to stay dry might want to avoid the months from June to August when rainfall is at its peak, reaching an average of 102mm (4.02") to 169mm (6.65"). During these months, the city experiences 24 to 26 rainy days on average.Spring weather in Lao Cai
Spring, which spans from March to early May, brings a mild warmth with high temperatures from 24.8°C (76.6°F) to 31.2°C (88.2°F) and low averages from 11.3°C (52.3°F) to 18.1°C (64.6°F). During this period, the city sees an average rainfall of 8mm (0.31") to 48mm (1.89"), making it less humid than other seasons.Summer weather in Lao Cai
Summers in Lao Cai, extending from May to August, are dominated by hot temperatures and rainfall. High temperatures from 31.2°C (88.2°F) to 32.2°C (90°F) characterize the season, as does the area's heavy rainfall of 92mm (3.62") to 169mm (6.65").Autumn weather in Lao Cai
Autumn settles in Lao Cai from September to November, during which the temperatures decrease, ranging from a high of 30°C (86°F) to a low of 24.5°C (76.1°F). Despite the less brutal heat, rainfall is still prevalent during September at 69mm (2.72"), but it gradually decreases towards November, reaching just 12mm (0.47").Winter weather in Lao Cai
Winters in Lao Cai, spanning from December to February, are surprisingly mild and dry, with high temperatures ranging from 20.3°C (68.5°F) to 24.8°C (76.6°F) and low temperatures hovering from 9.3°C (48.7°F) to 11.3°C (52.3°F). The rainfall during this period is minimal, keeping to between 12mm (0.47") in December to 27mm (1.06") in January, providing a drier season for the city's inhabitants and its visitors.Weather in January
The year begins in Lao Cai, Vietnam, with moderate temperatures and relative humidity; January displays a cooler and dryer state compared with the following February. Sunshine hours are ample, making the days vibrant, while nights cool down considerably, offering respite from the daylight warmth. Weather in January »Weather in February
Transitioning from January, February in Lao Cai, Vietnam, experiences a subtle increase in average temperatures and a significant reduction in rainfall. This month stands out with the lowest rainfall through the year, recording a mere 8mm (0.31") across an average of 4.7 days. Weather in February »Weather in March
Weather in March in Lao Cai, Vietnam, continues the warming trend from February with slightly elevated temperatures. Additionally, an increase in rainfall is observed, hinting at the onset of the wetter phase in this region. The daylight period extends as the progresses towards April, generously offering more sunlit hours. Weather in March »Weather in April
As March transitions into April in Lao Cai, Vietnam, a significant increase in the rainfall becoming more evident. April carries the distinction of receiving 48mm (1.89") rainfall over 15.5 days, almost twice the volume from the previous March. Weather in April »Weather in May
May in Lao Cai, Vietnam, marks a prominent surge in rainfall compared to April, ushering in what might be discussed as the peak monsoon season. Sunshine hours decline distinctively, allowing clouds to dominate much of the sky. The weather sees the highest average temperatures, reaching up to 32.2°C (90°F). Weather in May »Weather in June
Advancing into June, Lao Cai, Vietnam, receives more rainfall days compared to the preceding May, though the total rainfall measurement shows a minor increase. June also records the highest average minimum temperature, touching 21.5°C (70.7°F). Weather in June »Weather in July
In July, Lao Cai, Vietnam, experiences the peak of rainfall, with the monthly measurement recording 141mm (5.55") over 27.7 days. This heavy precipitation marks the apex of the monsoon season. Despite the dense cloud coverage and increased rainfall, temperatures remain relatively high, sustaining the tropical character of the region. Weather in July »Weather in August
August in Lao Cai, Vietnam, while moderately less wet than July, still ranks in the higher spectrum of rainfall months with a total of 169mm (6.65"). Although the days receive ample sunlight, the overshadowing clouds and consequent showers shape the overall weather patterns. Weather in August »Weather in September
The arrival of September in Lao Cai, Vietnam, brings a notable drop in rainfall from the preceding August and the weather pattern begins to shift towards drier conditions. It strikingly receives just over a third of August's rainfall, recording 69mm (2.72") over 20.4 days. Weather in September »Weather in October
October presents less rain showers than September in Lao Cai, Vietnam. A marked decrease in rainfall totals and number of wet days signifies the trailing end of the wet months. Mirroring the changes in rainfall, temperatures gradually retreat, bringing cooler days and notably chill nights. Weather in October »Weather in November
The last month of the autumn, November, is also a moderately hot month in Lao Cai, Vietnam, with temperature in the range of an average high of 24.5°C (76.1°F) and an average low of 13.1°C (55.6°F). In Lao Cai, November's average high-temperature stands at a still warm 24.5°C (76.1°F), closely related to the preceding month. Weather in November »Weather in December
December concludes the weather calendar for Lao Cai, Vietnam with a return to cooler temperatures akin to January. Despite the chill, average daylight remains steady, gifting Lao Cai with ample sunlight. A rise in cloud coverage compared to November suggests a slight increase in relative humidity, yet, the month stays within the dry period receiving only 26mm (1.02") rain across 8 days. Weather in December »Updated: Jun 4, 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
Lao Cai experiences its average lowest temperatures in January, reaching a peak of 20.3°C (68.5°F) and a minimum of 9.3°C (48.7°F).
Throughout the year, there are 188.3 rainfall days, and 770mm (30.31") of precipitation is accumulated.
January has the least sunshine of the year, with an average of 6.2h of sunshine.
The months with the lowest UV index are January and December, with an average maximum UV index of 4.
The month with the least rainfall is February, when the rain falls for 4.7 days and typically collects 8mm (0.31") of precipitation.
The least humid month is March, with an average relative humidity of 60%.
March through September, with an average maximum UV index of 6, are months with the highest UV index.
The month with the most sunshine is April, with an average of 10.8h of sunshine.
Lao Cai's temperature records reveal May as the warmest month, marked by average highs of 32.2°C (90°F) and lows of 20.3°C (68.5°F).
June has the longest days of the year in Lao Cai, with an average of 13h and 30min of daylight.
The months with the highest humidity are July, October and November, with an average relative humidity of 78%.
The month with the most rainfall is August, when the rain falls for 26.8 days and typically aggregates up to 169mm (6.65") of precipitation.
The month with the shortest days is December, with an average of 10h and 48min of daylight.
Lao Cai does not observe Daylight Saving Time (DST). +07 timezone is used throughout the entire year.
Average temperature
Lao Cai, Vietnam
The warmest month (with the highest average high temperature) is May (32.2°C).
The month with the lowest average high temperature is January (20.3°C).
The month with the highest average low temperature is June (21.5°C).
The coldest month (with the lowest average low temperature) is January (9.3°C).
Average pressure
Lao Cai, Vietnam
- Average pressure in January:
1017.9mbar - Average pressure in February:
1015.3mbar - Average pressure in March:
1013mbar - Average pressure in April:
1010.7mbar - Average pressure in May:
1007.9mbar - Average pressure in June:
1005.1mbar
- Average pressure in July:
1005.4mbar - Average pressure in August:
1006.4mbar - Average pressure in September:
1010.4mbar - Average pressure in October:
1015mbar - Average pressure in November:
1016.6mbar - Average pressure in December:
1018.4mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is June (1005.1mbar).
Average wind speed
Lao Cai, Vietnam
- Average wind speed in January:
4.5km/h - Average wind speed in February:
4.8km/h - Average wind speed in March:
5.2km/h - Average wind speed in April:
4.8km/h - Average wind speed in May:
4.5km/h - Average wind speed in June:
4.2km/h
- Average wind speed in July:
3.8km/h - Average wind speed in August:
3.5km/h - Average wind speed in September:
3.5km/h - Average wind speed in October:
3.8km/h - Average wind speed in November:
4km/h - Average wind speed in December:
4.2km/h
The windiest month (with the highest average wind speed) is March (5.2km/h).
The calmest months (with the lowest average wind speed) are August and September (3.5km/h).
Average humidity
Lao Cai, Vietnam
The months with the highest relative humidity are July, October and November (78%).
The month with the lowest relative humidity is March (60%).
Average rainfall
Lao Cai, Vietnam
The wettest month (with the highest rainfall) is August (169mm).
The driest month (with the least rainfall) is February (8mm).
Average rainfall days
Lao Cai, Vietnam
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
9.2 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
24.8 days
- Average rainfall days in July:
27.7 days - Average rainfall days in August:
26.8 days - Average rainfall days in September:
20.4 days - Average rainfall days in October:
15.1 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is July (27.7 days).
The month with the least rainy days is February (4.7 days).
Average daylight / Average sunshine
Lao Cai, Vietnam
- Average daylight in January:
10h and 54min - Average daylight in February:
11h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 12min - Average daylight in June:
13h and 30min
- Average daylight in July:
13h and 24min - Average daylight in August:
12h and 54min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 6min - Average daylight in December:
10h and 48min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in January:
6h and 12min - Average sunshine in February:
7h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 48min - Average sunshine in May:
10h and 18min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
9h and 30min - Average sunshine in August:
10h and 6min - Average sunshine in September:
10h and 12min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 24min - Average sunshine in December:
6h and 24min
The month with the most sunshine is April (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days
Lao Cai, Vietnam
- Average sunshine days in January:
19.4 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
19.9 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
9 days - Average sunshine days in June:
2.8 days
- Average sunshine days in July:
1.7 days - Average sunshine days in August:
1.8 days - Average sunshine days in September:
6.3 days - Average sunshine days in October:
11.7 days - Average sunshine days in November:
18 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is February (20.8 days).
The month with the least sunshine days is July (1.7 days).
Average UV index
Lao Cai, Vietnam
The months with the highest UV index are March, April, May, June, July, August and September (UV index 6).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover
Lao Cai, Vietnam
The month with the most cloud cover is October (Cloud cover 50).
The month with the least cloud cover is March (Cloud cover 25).
Average visibility
Lao Cai, Vietnam
The month with the highest visibility is March (10km).
The month with the lowest visibility is November (7km).
