Nan is rarely comfortable to be outside at midday. It comes closest in late December, and even then it is often wet. For sun, aim for late November to February.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go from late November to February. It peaks in late December, at 73. Avoid mid April to early June for this: it falls to 8, mostly because it is too hot. The clearest skies come in March, when the sky is typically 23% covered at midday (mostly clear).
Nan never quite rates Good for being outside. It comes closest in late December, at 37, mostly because it is often wet. The weakest stretch is from March to mid November, when it drops to 0, mostly because it is too hot.
Walking is not what Nan is for: the Active outdoors rating tops out at 11, mostly because it is too warm.
The year, measured
The average temperature in Nan over the whole year is 26°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 16°C. The rainy (wet) season in Nan runs from April to September, peaking in July with a 69% chance of rain on a given day. The dry season is October to December; November is the driest month, at 43%. Winds in Nan are highest in April, averaging 0.8 m/s (3 km/h), and lightest in October, at 0.4 m/s (1 km/h). The prevailing wind is from the S. The clearest skies in Nan come in February, when the sky is typically 25% covered; August is the cloudiest month, at 78%.
Month by month Nan climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 27°C | 16°C | 29°C | 63% | 39% | 0.5 m/s | 32 | 72 | 8 |
| February | 30°C | 17°C | 31°C | 52% | 25% | 0.6 m/s | 16 | 66 | 3 |
| March | 33°C | 20°C | 35°C | 53% | 27% | 0.7 m/s | 3 | 28 | 0 |
| April | 34°C | 23°C | 37°C | 65% | 40% | 0.8 m/s | 2 | 12 | 0 |
| May | 33°C | 25°C | 38°C | 63% | 56% | 0.7 m/s | 0 | 9 | 0 |
| June | 32°C | 25°C | 36°C | 60% | 68% | 0.8 m/s | 0 | 12 | 0 |
| July | 31°C | 25°C | 35°C | 69% | 76% | 0.8 m/s | 0 | 16 | 0 |
| August | 30°C | 25°C | 35°C | 67% | 78% | 0.7 m/s | 1 | 17 | 0 |
| September | 31°C | 24°C | 36°C | 63% | 69% | 0.5 m/s | 0 | 13 | 0 |
| October | 31°C | 23°C | 35°C | 56% | 55% | 0.4 m/s | 1 | 21 | 0 |
| November | 30°C | 21°C | 33°C | 43% | 41% | 0.4 m/s | 5 | 45 | 0 |
| December | 28°C | 17°C | 30°C | 48% | 34% | 0.4 m/s | 29 | 68 | 8 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Nan weather by season
Year round, Nan has days of about 27°C at their warmest in January, its coolest month, and 34°C in April, its warmest; the coolest hours of the day run from 16°C to 25°C through the year, and the average temperature over the year is 26°C around the clock. Rain is most likely around July and least likely around November. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Nan weather in winterDecember to February
Winter in Nan has typical daily highs of about 28°C and lows of about 16°C, with a 55% chance of rain on a given day.
Nan weather in springMarch to May
Spring in Nan has typical daily highs of about 33°C and lows of about 23°C, with a 60% chance of rain on a given day.
Nan weather in summerJune to August
Summer in Nan has typical daily highs of about 31°C and lows of about 25°C, with a 65% chance of rain on a given day.
Nan weather in autumnSeptember to November
Autumn in Nan has typical daily highs of about 31°C and lows of about 23°C, with a 54% chance of rain on a given day.
When is the rainy season in Nan?
The rainy (wet) season in Nan runs from April to September, peaking in July with a 69% chance of rain on a given day. The dry season is October to December; November is the driest month, at 43%.
What time of year is Nan windiest?
Winds in Nan are highest in April, averaging 0.8 m/s (3 km/h), and lightest in October, at 0.4 m/s (1 km/h). The prevailing wind is from the S.
What is the average temperature in Nan year round?
The average temperature in Nan over the whole year is 26°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 16°C.
Where to go instead in early May, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.