May is one of the warmer months of the year in Lahaul and Spiti, with average highs near 9.4°C and lows around -1.6°C (mean 3.9°C). It is one of the drier months, averaging 42 mm of rainfall and 64% relative humidity across the period.
May is one of the warmer months of the year in Lahaul and Spiti. Across 45 years of records, the warmest May in Lahaul and Spiti was 2000 — when the month averaged 6.9°C — while the coldest was 1982 at -0.2°C. Typical May days reach 9.4°C with nights near -1.6°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Lahaul and Spiti, averaging 42 mm of rainfall. The wettest May on record was 1982 with 180 mm, while the driest was 1991 at 1 mm.
Relative humidity in Lahaul and Spiti during May averages 64%. The most humid May was 1982 at 82%, and the least humid was 1988 at 43%.
May receives about 6.5 kWh/m²/day of solar energy in Lahaul and Spiti. The sunniest May was 2024 at 8.4 kWh/m²/day, and the cloudiest was 1992 at 5.3.
Average wind speed in Lahaul and Spiti during May is 1.9 m/s. The windiest Mays were 1996, 2003 and 2010, among others at 2.2 m/s, while the calmest was 1982 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.5°C | 4.0°C | 4.5°C | 4.1°C | 3.0°C | -0.5°C |
| Avg High | 9.4°C | 9.9°C | 10.4°C | 8.9°C | 7.5°C | -1.9°C |
| Avg Low | -2.5°C | -1.8°C | -1.3°C | -0.8°C | -1.4°C | +1.1°C |
| Avg Rain | 53 mm | 25 mm | 32 mm | 39 mm | 73 mm | +20 mm |
May temperatures in Lahaul and Spiti have fallen by about 0.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -15.7°C (1982) to a record high of 18.2°C (1988).
Rainfall in May is one of the drier months, averaging 42 mm, with a wettest year of 180 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Lahaul and Spiti
May is a good time to visit Lahaul and Spiti, with days averaging 9.4°C and nights around -1.6°C (mean 3.9°C, warmer than Lahaul and Spiti's yearly average) and moderate rainfall. June and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 9.5°C | 5.4°C | 1.3°C | 14.3°C | -1.9°C | 43 mm | 76% | 1.7 m/s | 6.5 |
| 2024 | 8.7°C | 3.5°C | -1.7°C | 13.0°C | -13.1°C | 38 mm | 70% | 1.5 m/s | 8.4 |
| 2023 | 4.8°C | 0.3°C | -4.2°C | 8.6°C | -12.9°C | 159 mm | 81% | 1.7 m/s | 6 |
| 2022 | 9.5°C | 4.8°C | 0.0°C | 12.9°C | -2.9°C | 50 mm | 71% | 1.8 m/s | 6.4 |
| 2021 | 6.0°C | 2.0°C | -1.9°C | 12.2°C | -6.9°C | 92 mm | 80% | 1.5 m/s | 6 |
| 2020 | 6.3°C | 2.0°C | -2.2°C | 10.9°C | -7.4°C | 55 mm | 77% | 1.5 m/s | 6.3 |
| 2019 | 7.3°C | 2.8°C | -1.7°C | 12.2°C | -5.7°C | 41 mm | 73% | 1.9 m/s | 7.7 |
| 2018 | 8.4°C | 3.5°C | -1.5°C | 13.4°C | -6.4°C | 50 mm | 65% | 1.9 m/s | 6.6 |
| 2017 | 8.3°C | 4.4°C | 0.4°C | 11.2°C | -6.4°C | 51 mm | 79% | 1.7 m/s | 8 |
| 2016 | 9.0°C | 4.8°C | 0.6°C | 13.1°C | -2.9°C | 95 mm | 74% | 1.8 m/s | 7 |
| 2015 | 8.3°C | 4.1°C | 0.0°C | 11.5°C | -5.4°C | 16 mm | 72% | 1.9 m/s | 6.9 |
| 2014 | 7.6°C | 3.4°C | -0.9°C | 12.9°C | -4.8°C | 36 mm | 75% | 2 m/s | 6.1 |
| 2013 | 9.6°C | 4.7°C | -0.2°C | 14.9°C | -4.3°C | 12 mm | 62% | 2 m/s | 6.5 |
| 2012 | 8.8°C | 3.0°C | -2.7°C | 15.3°C | -8.4°C | 7 mm | 63% | 1.8 m/s | 6.7 |
| 2011 | 11.1°C | 5.1°C | -0.8°C | 14.2°C | -3.7°C | 38 mm | 62% | 1.8 m/s | 7.3 |
| 2010 | 10.7°C | 4.7°C | -1.2°C | 15.0°C | -5.2°C | 42 mm | 59% | 2.2 m/s | 6.4 |
| 2009 | 8.8°C | 3.4°C | -1.9°C | 13.6°C | -4.1°C | 25 mm | 63% | 1.9 m/s | 6.4 |
| 2008 | 9.4°C | 4.3°C | -0.7°C | 13.1°C | -3.4°C | 66 mm | 66% | 1.7 m/s | 6.8 |
| 2007 | 9.2°C | 4.2°C | -0.8°C | 14.0°C | -3.0°C | 25 mm | 69% | 1.7 m/s | 6.6 |
| 2006 | 11.8°C | 6.0°C | 0.2°C | 14.2°C | -3.2°C | 43 mm | 64% | 1.8 m/s | 6.9 |
| 2005 | 7.6°C | 2.6°C | -2.3°C | 11.2°C | -4.5°C | 12 mm | 67% | 2 m/s | 6.1 |
| 2004 | 10.3°C | 3.9°C | -2.5°C | 14.5°C | -12.4°C | 33 mm | 58% | 2 m/s | 7.5 |
| 2003 | 8.2°C | 2.5°C | -3.2°C | 13.1°C | -9.0°C | 15 mm | 56% | 2.2 m/s | 6.6 |
| 2002 | 12.2°C | 5.8°C | -0.6°C | 15.6°C | -3.9°C | 11 mm | 46% | 2.1 m/s | 7.1 |
| 2001 | 12.2°C | 5.6°C | -0.9°C | 17.0°C | -2.7°C | 54 mm | 56% | 2 m/s | 6.7 |
| 2000 🔥 | 13.9°C | 6.9°C | 0.0°C | 16.6°C | -4.2°C | 34 mm | 50% | 2 m/s | 7 |
| 1999 | 11.4°C | 5.2°C | -1.0°C | 14.9°C | -4.8°C | 9 mm | 51% | 2 m/s | 6.4 |
| 1998 | 11.4°C | 5.0°C | -1.3°C | 17.4°C | -4.2°C | 16 mm | 54% | 2 m/s | 6.8 |
| 1997 | 6.7°C | 1.6°C | -3.4°C | 10.6°C | -8.5°C | 55 mm | 67% | 2 m/s | 6.3 |
| 1996 | 8.3°C | 3.1°C | -2.2°C | 12.8°C | -5.4°C | 31 mm | 66% | 2.2 m/s | 6 |
| 1995 | 9.8°C | 4.3°C | -1.2°C | 13.6°C | -7.0°C | 8 mm | 64% | 1.7 m/s | 6.1 |
| 1994 | 10.1°C | 4.3°C | -1.5°C | 13.9°C | -5.2°C | 53 mm | 61% | 2 m/s | 5.9 |
| 1993 | 11.1°C | 4.7°C | -1.8°C | 15.6°C | -4.8°C | 24 mm | 59% | 2.1 m/s | 5.6 |
| 1992 | 8.5°C | 2.7°C | -3.1°C | 13.0°C | -9.0°C | 38 mm | 64% | 1.9 m/s | 5.3 |
| 1991 | 10.2°C | 3.9°C | -2.3°C | 14.7°C | -5.2°C | 1 mm | 55% | 2.1 m/s | 5.4 |
| 1990 | 11.0°C | 5.2°C | -0.7°C | 15.7°C | -6.8°C | 15 mm | 65% | 1.7 m/s | 6.6 |
| 1989 | 9.8°C | 3.6°C | -2.6°C | 13.8°C | -7.0°C | 25 mm | 51% | 2.2 m/s | 5.6 |
| 1988 | 12.6°C | 5.4°C | -1.9°C | 18.2°C | -3.4°C | 4 mm | 43% | 2.2 m/s | 6.3 |
| 1987 | 6.7°C | 1.1°C | -4.4°C | 13.6°C | -15.6°C | 110 mm | 71% | 1.9 m/s | 5.8 |
| 1986 | 8.6°C | 2.9°C | -2.9°C | 14.6°C | -8.0°C | 23 mm | 61% | 2 m/s | 5.8 |
| 1985 | 10.1°C | 4.0°C | -2.1°C | 13.8°C | -5.0°C | 32 mm | 58% | 2 m/s | 6.1 |
| 1984 | 13.3°C | 6.1°C | -1.2°C | 18.1°C | -5.3°C | 8 mm | 45% | 2.1 m/s | 6.5 |
| 1983 | 8.9°C | 3.7°C | -1.5°C | 14.0°C | -7.1°C | 31 mm | 70% | 1.9 m/s | — |
| 1982 ❄️ 🌧️ | 4.5°C | -0.2°C | -4.9°C | 8.0°C | -15.7°C | 180 mm | 82% | 1.4 m/s | — |
| 1981 | 10.5°C | 4.8°C | -1.0°C | 14.0°C | -4.4°C | 61 mm | 63% | 1.8 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 9.4°C with lows near -1.6°C (mean 3.9°C), based on 45 years of NASA POWER data.
May averages 42 mm of rainfall in Lahaul and Spiti, one of the drier months. The wettest on record was 180 mm in 1982.
The hottest May reached 18.2°C in 1988. The coldest dipped to -15.7°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from -2.1°C to -1.3°C while daytime highs eased from 9.5°C to 7.7°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Lahaul and Spiti and one of the drier months, so plan for around 9.4°C daytime highs and -1.6°C at night.
Not quite — May is the 8th coolest month in Lahaul and Spiti, averaging 3.9°C.
For May in Lahaul and Spiti, pack warm layers and a jacket for chilly mornings, with typical highs of 9.4°C and lows of -1.6°C.
Relative humidity in May averages 64% — moderately humid.
Average wind speed in May is 1.9 m/s. The windiest May on record averaged 2.2 m/s (1988).
The wettest May on record was 1982 with 180 mm. On average, May sees 42 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Lahaul and Spiti behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
