Sa Pa

Lao Cai Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Lao Cai, Vietnam in September.

🔎
Sa Pa Bắc Hà Lao Cai

Planning a getaway to Lao Cai, Vietnam this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Lao Cai in September

Lao Cai, Vietnam is a region in Vietnam. September in Lao Cai generally has warm temperatures, with heavy precipitation.

Temperatures

You can expect warm maximum daytime temperatures of around 28°C (82°F) and nighttime temperatures around 21°C (70°F) in Sa Pa.

To learn more about the conditions in specific areas of Lao Cai, Vietnam, check out the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Lao Cai with an average of 185 mm (7.3 in) to heavy rainfall in Bắc Hà with 243 mm (9.6 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Sa Pa gets around 101 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Lao Cai by month

Pick a month to see the average temperature, rainfall and sunshine in Lao Cai — and find the best time to visit. (based on Sa Pa)

January19°C (66°F) February21°C (70°F) March24°C (75°F) April27°C (81°F) May29°C (84°F) This monthJune29°C (84°F) July29°C (84°F) August29°C (84°F) September28°C (82°F) October26°C (79°F) November23°C (73°F) December19°C (66°F)
Best Time to Visit Lao Cai →

Best Places to Visit in Lao Cai in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Lao Cai.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Lao Cai

What is the weather like in September for some of the most popular destinations in Lao Cai, Vietnam?

Temperature range in Lao Cai (September)

Precipitation variation in Lao Cai (September)

Sa Pa

In September Sa Pa generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
29°C (84°F)
28°C (82°F)
26°C (79°F)
Min temperature
22°C (72°F)
21°C (70°F)
18°C (64°F)
Monthly sun hours
119 hours
101 hours
95 hours
Monthly rainfall
347 mm (14 in)
216 mm (8.5 in)
133 mm (5.2 in)
Monthly rainy days
24 days
18 days
14 days
Weather conditions
poor
unpleasant
pleasant
Climate in Sa Pa →

Bắc Hà

In September Bắc Hà generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
29°C (84°F)
27°C (81°F)
Min temperature
23°C (73°F)
22°C (72°F)
19°C (66°F)
Monthly sun hours
119 hours
101 hours
95 hours
Monthly rainfall
404 mm (16 in)
243 mm (9.6 in)
113 mm (4.4 in)
Monthly rainy days
22 days
16 days
12 days
Weather conditions
poor
unpleasant
pleasant
Climate in Bắc Hà →

Lao Cai

In September Lao Cai generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
31°C (88°F)
30°C (86°F)
27°C (81°F)
Min temperature
23°C (73°F)
22°C (72°F)
19°C (66°F)
Monthly sun hours
119 hours
101 hours
95 hours
Monthly rainfall
286 mm (11 in)
185 mm (7.3 in)
132 mm (5.2 in)
Monthly rainy days
22 days
16 days
12 days
Weather conditions
poor
unpleasant
pleasant
Climate in Lao Cai →

Is your destination not in the list? Have a look at all destinations in Lao Cai, in Vietnam.

In our records: Vietnam September extremes

Notable September records observed across cities in Vietnam in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest September day in Vietnam brought 486 mm (19 in) in Bạch Mã on September 4, 2009.

Popular cities in September

Day & night temperatures, rainfall and average weather in Lao Cai in September.

City Weather Day temp Night temp Rainfall
Sa Pa 28°C (82°F) 21°C (70°F) 216 mm (8.5 in)
Bắc Hà 29°C (84°F) 22°C (72°F) 243 mm (9.6 in)
Lao Cai 30°C (86°F) 22°C (72°F) 185 mm (7.3 in)

Lao Cai weather in September: frequently asked questions

What is the weather like in Lao Cai, Vietnam in September?

Expect unpleasant weather across Lao Cai, Vietnam in September. The popular destination of Sa Pa averages 28°C (82°F) by day and 21°C (70°F) at night during this month.

What is the average temperature in Lao Cai, Vietnam in September?

Daytime temperatures in Sa Pa peak at roughly 28°C (82°F) in September, dropping to about 21°C (70°F) overnight.

Does Lao Cai, Vietnam get a lot of rain in September?

Expect plenty of rainfall. Sa Pa records an average of 216 mm (8.5 in) in September, putting it among the wetter months for Lao Cai, Vietnam.

Is September a Good Time to Visit Lao Cai, Vietnam?

In our opinion, September may not be the ideal time to visit Lao Cai, Vietnam due to the typically unpleasant weather in Sa Pa.

On average, the best time to visit Lao Cai, Vietnam is in November with generally perfect weather in Sa Pa. On the other hand, the months of June, July and August tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Lao Cai.

Weather and climate has detailed information for every country in the world. Are you going to Vietnam? Get detailed historical weather averages for many cities in Vietnam.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

Visit Sapa in Vietnam

Balancing on the edges of a rice field with endless views. A trek through the valley of Sapa is definitely a must for the bucket list.
Peace, beauty and silence in Vietnam

Vedana is located along the shores of a secluded, peaceful and serene lagoon, surrounded in lushly forested peaks. This ensures an isolated appeal and stunning views across a vast immense lagoon.
Must visit in Vietnam →