In Swaziland, a small country, bordering South Africa and Mozambique, mountainous in the west and hilly in the east, the climate varies mainly with altitude. Throughout the country, there is a rainy season from mid-October to mid-April, and a dry season from mid-April to mid-October, but in the western area, where the altitude is higher, rainfall is more abundant. The rains occur primarily as showers or thunderstorms in the afternoon. On the contrary, the austral winter is dry and sunny.
The altitude determines three areas with different climates and environments.
1 - In the west, we find the Highveld, crossed by the Drakensberg Mountains, at an altitude between 800 and 1,800 meters (2,600 and 6,000 ft); here the climate is temperate, with cold nights in winter, and being more humid we find forests, rivers and waterfalls. Sometimes, during summer it can get hot during the day, but nights are still cool; while in winter the night temperature can drop below freezing (0 °C or 32 °F). The rainfall amounts to 1,000/2,000 millimeters (40/80 inches) per year. The capital, Mbabane, is situated in this area, at 1,200 meters (3,900 feet) above sea level.
Here are the average temperatures of Mbabane.

In Mbabane, 1,350 mm (53 in) of rain fall per year, with a maximum in summer (from November to February) and a minimum in winter, when the rains are rare. Here is the average rainfall.

The sun in Mbabane, and in Swaziland in general, shines all year round, but especially in the dry season, while in the rainy season the hours of sunshine decrease a little.

2 - The Middle Veld lies in the center of the country, between 400 and 800 meters (1,300 and 2,600 feet) above sea level. Here the temperature is slightly higher: in winter during the day the weather is nice, it gets cold at night but the risk of frost is lower. On the contrary, summer is hot, sometimes very hot, with peaks near 40 °C (104 °F).
Here are the average temperatures of Manzini, the second city of the country.

The rainfall pattern is the same as that of Mbabane, with a summer maximum and a winter minimum, but the amount is lower, around 920 mm (36 in) per year.

3 - The Lowveld is found in the east, between 200 and 400 meters (650 and 1,300 feet), and it's characterized by a warmer climate and a landscape dominated by the savannah. During winter, nights can be cold, with a wide daily temperature range. Summer is humid and uncomfortably hot.
Here is the average temperature of Big Bend, a town in the east of the country, at 100 meters (350 ft) above sea level.

Rainfall in the Lowveld is even lower, and amounts to around 500/900 mm (20/35 in) per year.

In the easternmost area, the altitude increases slightly again, in the Lebombo Mountains, which despite their name do not reach 800 meters (2,600 feet), so they can be considered as hills rather than mountains.

Tropical cyclones

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Occasionally Swaziland can be affected by tropical cyclones, coming from the Indian Ocean (which lies to the east, beyond the border with Mozambique and South Africa), as happened with Tropical Storm Domoina in late January 1984. The cyclone season in the Southern Hemisphere runs from November to mid-May, but they are most likely from late December to mid-April.

Best Time

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The best time to visit Swaziland is from June to September, since it is the coolest, the driest and outside the cyclone season; however, it is winter, so it can get cold at night even in the Lowveld, and even more so in the Highveld, where at night the temperature can drop below freezing from May to August. September is probably the best month because it's less cold in the mountains.

What to pack

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In winter (June to August): for the Highveld and Mbabane, pack spring/autumn clothes for the day, but also sweater and jacket for the evening; hiking shoes. For the Middle Veld, spring/autumn clothes. For the Lowveld, light clothes for the day, a jacket and a sweater for the evening and the early hours of the morning.

In summer (December to February): for the Highveld and Mbabane, pack light clothes for the day, a sweater and sweatshirt or jacket for the evening, a sun hat, an umbrella or a light raincoat, hiking shoes. For the Middle Veld, light clothes for the day, a light sweatshirt and light jacket for the evening. For the Lowveld, light clothing, a light raincoat or umbrella, a light sweatshirt for the evening.