Temperature

Monthly Temperature Outlook: March 2025

Issued: 3 Mar 2025

For March 2025, above-normal temperature is predicted for much of the Maritime Continent and the western half of Mainland Southeast Asia.

For March 2025, above-normal temperature is predicted over most parts of the Maritime Continent, except for over the Malay Peninsula and northern half of the Philippines, based on the multi-model ensemble (Figure 4). All three models agree on above-normal temperature over the eastern and central Maritime Continent (Figures 1-3), with the ECMWF and UK Met Office models also predicting above-normal temperature much of the western region. The NCEP model (Figure 1) shows disagreement with other models also over parts of the southwestern Maritime Continent where it predicts near- to above-normal temperature. Model skill is relatively good for the Maritime Continent.

For Mainland Southeast Asia, above-normal temperature is predicted for the western region, based on the multi-model ensemble (Figure 4), with below- to near-normal temperature elsewhere. All three models predict above-normal temperature over the western region, with the NCEP model predicting above-normal temperature also over the eastern half, where the other two models predicting below- to near-normal temperature. Model skill is moderate to good for Mainland Southeast Asia at this time of year. 

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Figure 1: Temperature tercile summary predictions of NCEP model for March 2025 (contains modified Copernicus C3S information).
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Figure 2: Temperature tercile summary predictions of ECMWF model for March 2025 (contains modified Copernicus C3S information).
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Figure 3: Temperature tercile summary predictions of UK Met Office model for March 2025 (contains modified Copernicus C3S information).
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Figure 4: Temperature tercile summary predictions of the multi-model ensemble for March 2025 (contains modified Copernicus C3S information).
Figure 5: Average climatological temperature for March based on ERA5 (Reference period: 1991-2020).

The qualitative outlook is assessed for the region in general. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.