Soreng Weather in September (1981–2025)

📍 27.15°N, 88.00°E •
📊

September at a Glance in Soreng

(1981–2025)
Avg High
🔥
24.5°C
Avg Low
❄️
18.5°C
Avg Temp
🌡️
21.5°C
Avg Rain
🌧️
219 mm
Avg Humidity
💧
88%
Avg Wind
🌬️
1.1 m/s
Avg Solar
☀️
3.9
kWh/m²/day
vs Annual
📈
+2.5°C
temp difference
🌤️Mild afternoons🌤️Mild mornings🌤️Fairly sunny🌧️Wet month🍃Light winds💦Humid air

Soreng September Weather Overview

September is one of the warmer months of the year in Soreng, with average highs near 24.5°C and lows around 18.5°C (mean 21.5°C). It is a relatively wet time of year, averaging 219 mm of rainfall and 88% relative humidity across the period.

Soreng September Temperature History (1981–2025)

Range

September is one of the warmer months of the year in Soreng. Across 45 years of records, the warmest September in Soreng was 2024 — when the month averaged 22.7°C — while the coldest was 1984 at 20.4°C. Typical September days reach 24.5°C with nights near 18.5°C. The long-term trend is warming, about 0.2°C per decade.

1981–1985 vs 2021–2025

Avg Temp21.0°C→22.1°C+1.1°C
Max Temp23.9°C→24.9°C+1°C
Min Temp18.1°C→19.4°C+1.3°C

Trend (per decade)

Avg Temp+0.2°C/decade ↗
Max Temp+0.1°C/decade ↗
Min Temp+0.3°C/decade ↗

Distribution of Avg Temp

20.0°C–20.8°C2 yr (4%)
20.8°C–21.5°C21 yr (47%)
21.5°C–22.3°C21 yr (47%)
22.3°C–23.0°C1 yr (2%)

Soreng September Rainfall History (1981–2025)

Range

September is a relatively wet time of year in Soreng, averaging 219 mm of rainfall. The wettest September on record was 2020 with 628 mm, while the driest was 2009 at 89 mm.

Soreng September Humidity History (1981–2025)

Range

Relative humidity in Soreng during September averages 88%. The most humid September was 2020 at 93%, and the least humid was 1994 at 82%.

Soreng September Solar History (1981–2025)

Range

September receives about 3.9 kWh/m²/day of solar energy in Soreng. The sunniest September was 1997 at 4.6 kWh/m²/day, and the cloudiest were 2016 and 2020 at 3.3.

Soreng September Wind History (1981–2025)

Range

Average wind speed in Soreng during September is 1.1 m/s. The windiest Septembers were 2018, 2020 and 2022, among others at 1.2 m/s, while the calmest were 2010, 2013 and 2016, among others at 1 m/s.

What September Feels Like in Soreng

🌅
Mild
Morning
🌞
Mild
Afternoon
🌆
Mild
Evening
Rain chanceHigh
Outdoor comfort★★☆☆☆

How September Ranks in Soreng

🔥5th warmest month of the year
🌧️4th wettest month of the year
☀️8th sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Soreng Weather by Month

Soreng September Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp21.1°C21.4°C21.4°C21.7°C22.1°C+1°C
Avg High24.1°C24.6°C24.5°C24.5°C24.8°C+0.7°C
Avg Low18.1°C18.2°C18.3°C18.9°C19.4°C+1.3°C
Avg Rain194 mm142 mm170 mm269 mm383 mm+189 mm

Extreme September Records in Soreng

🔥Warmest September28.7°C2024
🧊Coldest September14.6°C1986
🌧️Wettest September628 mm2020
🏜️Driest September89 mm2009
🌬️Windiest September1.2 m/s1983

Key Insights for September

✅

September temperatures in Soreng have risen by about 1.1°C between 1981–1985 and 2021–2025.

✅

September has ranged from a record low of 14.6°C (1986) to a record high of 28.7°C (2024).

✅

Rainfall in September is a relatively wet time of year, averaging 219 mm, with a wettest year of 628 mm.

Is September a Good Time to Visit Soreng?

A good time to visit Soreng

September is a good time to visit Soreng, with days averaging 24.5°C and nights around 18.5°C (mean 21.5°C, warmer than Soreng's yearly average) and higher rainfall. April and May are marginally more temperate, but September still suits most travellers.

See Soreng's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Soreng Weather in September — In Depth

☀️ September climate overview

September is one of the warmer months of the year in Soreng, with average highs near 24.5°C and lows around 18.5°C (mean 21.5°C). It is a relatively wet time of year, averaging 219 mm of rainfall and 88% relative humidity across the period.

🌧️ Rain, humidity & wind in September

September averages 219 mm of rainfall in Soreng, a relatively wet time of year compared with the rest of the year. The wettest September on record saw 628 mm (2020), and the driest just 89 mm (2009). Humidity sits around 88% and average wind speed is 1.1 m/s, with solar radiation averaging 3.9 kWh/m²/day.

📈 How September has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.1°C. Daytime highs moved from 23.9°C to 24.9°C and overnight lows from 18.1°C to 19.4°C over the same span.
September Weather in Soreng, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202525.1°C22.2°C19.3°C26.7°C17.6°C312 mm89%1.1 m/s3.8
2024 🔥25.6°C22.7°C19.9°C28.7°C16.6°C584 mm88%1.1 m/s4
202324.9°C22.2°C19.5°C26.8°C17.5°C233 mm89%1.1 m/s4.2
202224.3°C21.7°C19.1°C25.5°C17.9°C329 mm92%1.2 m/s3.4
202124.6°C21.8°C19.0°C26.5°C17.5°C215 mm90%1.1 m/s4.1
2020 🌧️24.3°C22.0°C19.6°C26.9°C18.6°C628 mm93%1.2 m/s3.3
201923.9°C21.4°C18.9°C27.4°C15.6°C344 mm91%1.1 m/s3.5
201825.0°C22.0°C19.0°C26.7°C18.0°C241 mm89%1.2 m/s4
201724.6°C22.0°C19.3°C27.4°C17.9°C197 mm92%1.2 m/s3.8
201623.9°C21.5°C19.1°C25.5°C17.8°C348 mm91%1 m/s3.3
201524.7°C22.1°C19.4°C26.4°C17.7°C257 mm89%1.1 m/s4
201424.5°C21.6°C18.8°C26.7°C16.7°C226 mm89%1.1 m/s3.8
201325.2°C22.0°C18.8°C27.1°C16.5°C193 mm86%1 m/s4.2
201225.1°C22.0°C18.9°C27.2°C17.8°C272 mm86%1.1 m/s3.9
201124.3°C21.4°C18.5°C26.5°C17.0°C284 mm90%1.2 m/s3.7
201024.1°C21.3°C18.4°C25.7°C17.3°C323 mm90%1 m/s3.6
200924.8°C21.7°C18.6°C26.4°C16.9°C89 mm88%1.1 m/s4.1
200824.5°C21.4°C18.2°C25.7°C17.1°C101 mm87%1 m/s3.8
200723.9°C21.1°C18.3°C25.9°C15.3°C281 mm88%1.1 m/s3.7
200624.2°C21.2°C18.3°C26.7°C16.0°C357 mm88%1.2 m/s3.9
200525.3°C22.1°C18.9°C26.9°C17.9°C120 mm85%1 m/s4.3
200424.0°C21.0°C18.1°C25.6°C15.3°C150 mm89%1.1 m/s3.6
200324.6°C21.6°C18.7°C26.1°C17.2°C110 mm89%1.1 m/s3.6
200224.8°C21.3°C17.7°C26.9°C16.2°C112 mm84%1.1 m/s3.7
200124.3°C21.3°C18.4°C25.9°C17.6°C200 mm89%1 m/s3.7
200024.2°C21.0°C17.8°C26.5°C15.4°C177 mm87%1.1 m/s3.9
199924.3°C21.2°C18.2°C26.0°C16.8°C122 mm89%1.1 m/s4.2
199824.9°C21.8°C18.6°C26.9°C17.3°C146 mm87%1.1 m/s4.2
199724.0°C21.0°C17.9°C26.5°C15.7°C183 mm89%1.1 m/s4.6
199624.7°C21.4°C18.1°C27.0°C16.2°C102 mm86%1 m/s4.5
199524.9°C21.6°C18.2°C27.2°C16.1°C93 mm86%1.2 m/s4.2
199425.5°C21.9°C18.3°C27.5°C16.6°C92 mm82%1.1 m/s4.5
199324.9°C21.4°C17.9°C27.9°C16.7°C102 mm84%1.2 m/s3.6
199224.8°C21.4°C17.9°C27.6°C15.5°C110 mm84%1.1 m/s4.3
199123.5°C20.9°C18.3°C25.3°C17.0°C311 mm92%1.2 m/s4
199024.7°C21.5°C18.3°C27.6°C16.0°C158 mm87%1.1 m/s3.6
198924.6°C21.5°C18.3°C27.1°C16.7°C196 mm88%1.2 m/s3.8
198824.9°C21.7°C18.6°C26.6°C16.6°C106 mm87%1.2 m/s3.7
198724.2°C21.3°C18.5°C26.2°C16.9°C236 mm90%1.1 m/s3.8
198623.7°C20.5°C17.3°C26.7°C14.6°C191 mm88%1.1 m/s4.1
198523.7°C20.8°C18.0°C26.0°C16.1°C211 mm89%1 m/s3.7
1984 ❄️23.3°C20.4°C17.6°C25.9°C15.9°C278 mm89%1.2 m/s3.8
198324.3°C21.4°C18.5°C26.0°C17.6°C161 mm90%1.2 m/s—
198224.6°C21.3°C18.1°C26.9°C15.0°C184 mm87%1.1 m/s—
198123.8°C21.0°C18.2°C26.8°C16.6°C186 mm89%1 m/s—

Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.

Other Cities in Sikkim

Soreng September Weather — FAQ

What is the average temperature in Soreng in September?▼

The average high in September is around 24.5°C with lows near 18.5°C (mean 21.5°C), based on 45 years of NASA POWER data.

Does it rain a lot in Soreng in September?▼

September averages 219 mm of rainfall in Soreng, a relatively wet time of year. The wettest on record was 628 mm in 2020.

What was the hottest September on record in Soreng?▼

The hottest September reached 28.7°C in 2024. The coldest dipped to 14.6°C in 1986.

Has September in Soreng gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.1°C. Daytime highs moved from 23.9°C to 24.9°C and overnight lows from 18.1°C to 19.4°C over the same span.

Is September a good time to visit Soreng?▼

September is one of the warmer months of the year in Soreng and a relatively wet time of year, so plan for around 24.5°C daytime highs and 18.5°C at night.

Is September the coldest month in Soreng?▼

Not quite — September is the 8th coolest month in Soreng, averaging 21.5°C.

What should I pack for Soreng in September?▼

For September in Soreng, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 18.5°C. Bring an umbrella or light rain jacket too.

Is Soreng humid in September?▼

Relative humidity in September averages 88% — quite humid.

How windy is Soreng in September?▼

Average wind speed in September is 1.1 m/s. The windiest September on record averaged 1.2 m/s (1983).

Which September had the most rainfall in Soreng?▼

The wettest September on record was 2020 with 628 mm. On average, September sees 219 mm.

Where does this September weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Sikkim cities

Explore how the weather in Soreng behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.